Database Users

(Tutorial)How to use Swap!

This is my first first Tutorial thread in xda!
So,don't mind me and forgive me If i am done wrong something!
Swapper is simple application for "extending memory". Helps when you need some memory for non active applications (like music player + browser + maps + etc...).
Requirement: root, SD/SDHC card and custom kernel that support swap .
Warning: SD card will be used as swap space. It can (and will) shorten SD card lifespan.
1.Downlod Swapper 2 from market! Link: https://market.android.com/details?id=lv.n3o.swapper2
2.Install Swapper2 normally
3.There are 2ways to swap: first use swap by partition and another one is by none partition(But If you partition you can create more 256mb)
4.For using swap by partition u must partition your sdcard by using minitool or etc....(NOTE: partition to linux swap and primary)
5.After you partition you turn off yor phone and then back to xrecovery or cwm to clear cache partition
6.turn on n then open swapper2 normally and go to Preferences of swapper then you check safe to unmount and safe to remount
7.and then you go adavaned preferences and check the Use swap partition and Swap partition set it to /dev/block/mmcblk0p2
8.after that go back to swapper2 and turn it on (wait the process when it say All done It works)
9.Another one way is none using swap partition it easy because swap create it by itself but it can't more then 256mb
10.First Open Swapper2 then go to Preferences of swapper
11.Click on Swap size and click what number that u want to swap 32,48,64..etc
12.Then go back to Swapper2 and turn it on
13.For none using swap partition method It take a while 3minutes or more depend on class of your sd card!!!wait the process untill it say All done It mean that It works
Recommend: For me,I'm using micro sdcard 16G class10 so i partition my sdcard 1500mb for swap ^^ I alway free more ram about 90 to 120
Note: for swappiness it depend on your phone!!for me i can use swappiness 100 smoothy
If you have any question you can ask me more about this
I take my time for making this thread If you think I'm helped you Just Click THANKS for me

Remember: do it with your own risk and i don't warranthy if this method cause brick your lovely x8

the primary partition must be ext or can be fat or ntfs ?!
also do u notice real improvements ?

I never understood how to do it with terminal, so thanks for your help!

darknessx10 said:
I never understood how to do it with terminal, so thanks for your help!
Click to expand...
Click to collapse
Your welcome
Sent from my X8 using xda premium

Finally a simple and fast tutorial,thanks!

ahmedz_1991 said:
the primary partition must be ext or can be fat or ntfs ?!
also do u notice real improvements ?
Click to expand...
Click to collapse
Second partition must be linux swap and primary
Sent from my X8 using xda premium

I have a problem,when i format my sd card and put swap partition on mini partition tool,when i place my sd card back to phone its says "damaged sd card"...

I have swap running on 2 x8's. 1 is using 7000mb fat, 400 ext2 and 4-500 linux swap, however i cannot see the ext and swap partitions when i connect to pc, even though everything is working fine i would like to know how i can reformat my 8gb sd back to 8gb.
The other x8 has a 2gb unpartioned sd using the other method where a 256mb swap file is created. It works fine and is simple to set up but i have over 90mb free ram on partition set up and 70-80mb on the simple method.
All mine were set up with trial and error and there was no way to really confirm it was set up properly so this thread has confirmed my setup. It could have saved me time a few weeks ago but i'm sure lots of users will find this thread very helpful.
@ mods, I think its time to refresh the stickies as some are obsolete and i believe this thread would be an ideal sticky.
@OP, nice job. Thanks for your contribution to our little x8 section

corsav6 said:
I have swap running on 2 x8's. 1 is using 7000mb fat, 400 ext2 and 4-500 linux swap, however i cannot see the ext and swap partitions when i connect to pc, even though everything is working fine i would like to know how i can reformat my 8gb sd back to 8gb.
The other x8 has a 2gb unpartioned sd using the other method where a 256mb swap file is created. It works fine and is simple to set up but i have over 90mb free ram on partition set up and 70-80mb on the simple method.
All mine were set up with trial and error and there was no way to really confirm it was set up properly so this thread has confirmed my setup. It could have saved me time a few weeks ago but i'm sure lots of users will find this thread very helpful.
@ mods, I think its time to refresh the stickies as some are obsolete and i believe this thread would be an ideal sticky.
@OP, nice job. Thanks for your contribution to our little x8 section
Click to expand...
Click to collapse
You want to know how to format your sd card with 7000mb fat32 400 ext3 linux swap 500mb
If you format it,it will back to 8Gb sd card
Sent from my X8 using xda premium

RodrigoOgasawara said:
I have a problem,when i format my sd card and put swap partition on mini partition tool,when i place my sd card back to phone its says "damaged sd card"...
Click to expand...
Click to collapse
Let partition by this method:
1.connect your sd card to pc
2.open minitool partition
3.right click on your fat32 sd card and choose the word resize
4.after you resize u will see your partition
5.right click on your new partition and choose word create
6.partition it to linux swap and primary
7.apply it and wait the process
7.Done and Cheers
Sent from my X8 using xda premium

what i do wrong?

its working only for custom kernels?

Well i have a 4gb class 4 sd card.I;ve made'it 3.2 gb fat32 128linux swap and the rest ext 3.And i have min 90 mb free mem ,max 120.

RodrigoOgasawara said:
I have a problem,when i format my sd card and put swap partition on mini partition tool,when i place my sd card back to phone its says "damaged sd card"...
Click to expand...
Click to collapse
Don't forget to format after partitioning!
And with minitool for working swap and ext you must connect sd as phone's mass storage->not CWM mount usb storage, booted ROM and connect phone to PC.
Then you'll able to partition your sd. After all FORMAT and all will work.
+1 When you have a 4gb sd you must create FAT, when you have above 4 gb create FAT32. Create first a primary FAT(32), then a primary SWAP/EXT

I partitioned my SD card (4gb class 4) with this propieties
Primary: 3.4GB
Logical: 313MB
But when I put the sd card into the phone, it doesn't recognizes the SDCard.
It's weird because when I browse in my SD card via cwm it shows my files and folders :Z
Anyone knows what the hell i'm doing wrong?

junghyun01 said:
You want to know how to format your sd card with 7000mb fat32 400 ext3 linux swap 500mb
If you format it,it will back to 8Gb sd card
Sent from my X8 using xda premium
Click to expand...
Click to collapse
No, it is only showing as 7gb. When I format it stays at 7gb and I can't see the other 2 partitions on the PC. They work with links2sd and swapper. Do I need to remove anything from the rom connected with apps2sd, I'm using kuyadroid with alfs kernel. I have removed everything from the modules folder but my phone storage is low and links2sd says only 2% of ext2 been used even though it successfully links my apps, or so it claims. Sorry for all the questions but if I know then I can help others thanks for your reply
Sent from my E15 using XDA App

darknessx10 said:
I partitioned my SD card (4gb class 4) with this propieties
Primary: 3.4GB
Logical: 313MB
But when I put the sd card into the phone, it doesn't recognizes the SDCard.
It's weird because when I browse in my SD card via cwm it shows my files and folders :Z
Anyone knows what the hell i'm doing wrong?
Click to expand...
Click to collapse
all partition MUST set in PRIMARY no LOGICAL... For me let swapper2 make your sdcard partition is the safest & easiest way,@author 1question do i need to format my sdcard when i let swapper2 partition my sdcard...

Here is a easy tutorial for partition !
http://forum.xda-developers.com/wiki/SD_card_partitioning

corsav6 said:
No, it is only showing as 7gb. When I format it stays at 7gb and I can't see the other 2 partitions on the PC. They work with links2sd and swapper. Do I need to remove anything from the rom connected with apps2sd, I'm using kuyadroid with alfs kernel. I have removed everything from the modules folder but my phone storage is low and links2sd says only 2% of ext2 been used even though it successfully links my apps, or so it claims. Sorry for all the questions but if I know then I can help others thanks for your reply
Sent from my E15 using XDA App
Click to expand...
Click to collapse
you cannot see the others partition because the card reader or phone shows the 1st partition,you can see the other partition by using partition tool,coz the 1st partition is only mounted which is fat32...

Solved

Solved

Nobody knows?
Sent from my X8 using xda premium

bxmx666 said:
hello
i have a class 4 8gb sdcard with two partitions :
1st 256 ext3
2nd the rest is fat32
I used gingerdx moved to stock (didn't use the ext in stock) then when I full wipe in cwm it says error and doesn't format ext
Now the Ext PARTITION IS GONE! !!!
NO TOOL OR PROGRAM CAN SEE IT AND THE SPACE IS GONE TOO AND THERE ARE APPS IN IT THAT MAKES EVERY THING GO FC I DONT KNOW HOW IT WORKS
i tried to format the sd card but it didnt do a thing it just formated the fat32 patrition
so how can i fix it ???????!!!!!!!!!thanks in advance
Click to expand...
Click to collapse
Use partition tool mini software or else. Check you sd card,whether you ext gone or not. But fat32 is not kind of partition dude.
Sent from my Htc Evo 4g using xda premium

bxmx666 said:
hello
i have a class 4 8gb sdcard with two partitions :
1st 256 ext3
2nd the rest is fat32
I used gingerdx moved to stock (didn't use the ext in stock) then when I full wipe in cwm it says error and doesn't format ext
Now the Ext PARTITION IS GONE! !!!
NO TOOL OR PROGRAM CAN SEE IT AND THE SPACE IS GONE TOO AND THERE ARE APPS IN IT THAT MAKES EVERY THING GO FC I DONT KNOW HOW IT WORKS
i tried to format the sd card but it didnt do a thing it just formated the fat32 patrition
so how can i fix it ???????!!!!!!!!!thanks in advance
Click to expand...
Click to collapse
when your are full-wiping.... ur ext partition data also formated ..... but if the partition gone ? i duuno already
when require to full-wipe, try format /data only...

CKKnot said:
when your are full-wiping.... ur ext partition data also formated ..... but if the partition gone ? i duuno already
when require to full-wipe, try format /data only...
Click to expand...
Click to collapse
That what im wondering too, partition gone. Hmm. Lol bit.
Sent from my Htc Evo 4g using xda premium

well when i format it in cwm it says :
error mounting sd-ext
skipping format
and it says that when i fullwipe too
and minitool partition and gparted didnt see that there is a partition
and the apps in it shows up in rom if i put sdcard in so what the do you think is going on????????????????????????!!!!!!!!!!!!!!!!!!

bxmx666 said:
well when i format it in cwm it says :
error mounting sd-ext
skipping format
and it says that when i fullwipe too
and minitool partition and gparted didnt see that there is a partition
and the apps in it shows up in rom if i put sdcard in so what the do you think is going on????????????????????????!!!!!!!!!!!!!!!!!!
Click to expand...
Click to collapse
use card-reader, run partition wizard (GOOGLE MAN) and inspect while fix the problem urself @@ if really don't know then find us
---------- Post added at 04:02 PM ---------- Previous post was at 03:58 PM ----------
CKKnot said:
use card-reader, run partition wizard (GOOGLE MAN) and inspect while fix the problem urself @@ if really don't know then find us
Click to expand...
Click to collapse
Edit: Sorry, i din't see ur post just now
is that really:
and minitool partition and gparted didnt see that there is a partition
and the apps in it shows up in rom if i put sdcard in so what the do you think is going on????????????????????????!!!!!!!!!!!!!!!!!!
Click to expand...
Click to collapse
maybe you configured swap partition & ur sdcard is already wear out....

Sounds like you didnt partition you sd card yet buddy?. make sure you sd card "Fat32" format. how many GB you sd card mate? if you go to my computer, your sd card a still the same size?? if yes,thats mean no partition yet.
And imma fully recommend, do not use CWM/USB port to partition your sd card.
Take out Sd card From Phone and Use SD Card Reader.
P/s : go to youtube.com And Search how to partition SD Card Ext3,ext2,ext4 Tutorial.

Shimizux said:
Sounds like you didnt partition you sd card yet buddy?. make sure you sd card "Fat32" format. how many GB you sd card mate? if you go to my computer, your sd card a still the same size?? if yes,thats mean no partition yet.
And imma fully recommend, do not use CWM/USB port to partition your sd card.
Take out Sd card From Phone and Use SD Card Reader.
P/s : go to youtube.com And Search how to partition SD Card Ext3,ext2,ext4 Tutorial.
Click to expand...
Click to collapse
You didn't read my post mate
Its 8gb class4
I know that I partitioned it and the space is gone and I don't use swap
Sent from my X8 using xda premium

SD card problem

I have as follows problem:
When I use my Kingston 4GB sd card about 3 times of 5 when i wake my phone my sd card is unmount itself so all apps which is in sd card its not installed.
So i need everytime when this happened reboot the device and then all apps work normally its really annoying.
I tried on stock 2GB sd card and this not happened it works normally.
Why this happened? Kingston 4GB sd card should work normally but it doesnt.

Niquel97 said:
I have as follows problem:
When I use my Kingston 4GB sd card about 3 times of 5 when i wake my phone my sd card is unmount itself so all apps which is in sd card its not installed.
So i need everytime when this happened reboot the device and then all apps work normally its really annoying.
I tried on stock 2GB sd card and this not happened it works normally.
Why this happened? Kingston 4GB sd card should work normally but it doesnt.
Click to expand...
Click to collapse
which rom ?

andreas__ said:
which rom ?
Click to expand...
Click to collapse
I use now miros 4.0.4 RC2 and tried also Devswift aokp and this happened both roms.
I also tried format sd card with no help .

Niquel97 said:
I use now miros 4.0.4 RC2 and tried also Devswift aokp and this happened both roms.
I also tried format sd card with no help .
Click to expand...
Click to collapse
try to re-partiton your SD card using CWM
but save your important data first

andreas__ said:
try to re-partiton your SD card using CWM
but save your important data first
Click to expand...
Click to collapse
Do you mean that I format sd and wipe partition and then partition sd 512mb fat 32 using cvm??
If you mean that I've tried that but still happened that 'unmount' problem

Niquel97 said:
Do you mean that I format sd and wipe partition and then partition sd 512mb fat 32 using cvm??
If you mean that I've tried that but still happened that 'unmount' problem
Click to expand...
Click to collapse
just create a little ext and swap partition and the rest fat32

andreas__ said:
just create a little ext and swap partition and the rest fat32
Click to expand...
Click to collapse
So which sizes I choose 512mb ext and swap 64 and fat32?

Niquel97 said:
So which sizes I choose 512mb ext and swap 64 and fat32?
Click to expand...
Click to collapse
it asks for ext and swap
first ext - if you want link2SD /app2SD give it some space, else the lowest value.
second swap - i'm using 64 mb swap, for very heavy games you need 256 mb

andreas__ said:
it asks for ext and swap
first ext - if you want link2SD /app2SD give it some space, else the lowest value.
second swap - i'm using 64 mb swap, for very heavy games you need 256 mb
Click to expand...
Click to collapse
Thank you for your help I'm tested now 1day with 4Gb sd card and its worked normally without unmount problem

How to format 64gb micro sd card to Fat32 to work on SGS3

Hi guys,
I faced a problem with my 64gb. Sandisk micro SD and I solved the issue and I thought about posting the solution here that might help some of you.
so... the issue I faced is how to get TWRP recovery or CWM to mount my Ex sd card.
basically the problem is that the card is formatted in exfat or NTFS and in both ways it won't be recognized by TWRP and the only way to formate it in fat32 is by only one software because windows can not format more than 32gb in Fat32.
and here is how:
first: download EaseUS Partition Master Home Edition from this link http://download.cnet.com/EaseUS-Partition-Master-Home-Edition/3000-2248_4-10863346.html?tag=mncol%3bpop&cdlPid=10982635
Second : Now you can see a list of all of your hard drives. Note the one highlighted in blue on the grid. This is my 64GB MicroSDXC card in my USB Card Reader. Obviously the location of your card in the list may differ dependant on the number of drives in your computer
You’ll need to right-click on the drive in the list representing your 64GB MicroSDXC card and click “Format partition”
Third : You need to select FAT32 for the File System, and 32KB for Cluster Size.
EaseUS doesn’t immediately apply the changes you specify. Instead, it queues them up so that you can review and revise them before you commit to having the program affect those changes. then we need to press the Apply button.
that's it ... now you can enjoy your 64gb MicroSd and you can mount it in TWRP or CWM recovery .
your welcome

It has to be in general section.
Sent from my GT-I9300 using xda app-developers app

Certainly be a useful post for some that don't know . But its in the wrong section and will be missed .
OP report and ask a mod to move it .
jje

Use partition wizard tool
Sent from my GT-I9300 using xda app-developers app

Ohh Didn't know that
then where should I post it and how can I move it ?
or it is the admin who will move it for me ?
thanks

As you guys may be aware, the latest software update (4.1.2) does solve ANY exFAT issue

sam-had said:
Hi guys,
I faced a problem with my 64gb. Sandisk micro SD and I solved the issue and I thought about posting the solution here that might help some of you.
so... the issue I faced is how to get TWRP recovery or CWM to mount my Ex sd card.
basically the problem is that the card is formatted in exfat or NTFS and in both ways it won't be recognized by TWRP and the only way to formate it in fat32 is by only one software because windows can not format more than 32gb in Fat32.
and here is how:
first: download EaseUS Partition Master Home Edition from this link http://download.cnet.com/EaseUS-Partition-Master-Home-Edition/3000-2248_4-10863346.html?tag=mncol%3bpop&cdlPid=10982635
Second : Now you can see a list of all of your hard drives. Note the one highlighted in blue on the grid. This is my 64GB MicroSDXC card in my USB Card Reader. Obviously the location of your card in the list may differ dependant on the number of drives in your computer
You’ll need to right-click on the drive in the list representing your 64GB MicroSDXC card and click “Format partition”
Third : You need to select FAT32 for the File System, and 32KB for Cluster Size.
EaseUS doesn’t immediately apply the changes you specify. Instead, it queues them up so that you can review and revise them before you commit to having the program affect those changes. then we need to press the Apply button.
that's it ... now you can enjoy your 64gb MicroSd and you can mount it in TWRP or CWM recovery .
your welcome
Click to expand...
Click to collapse
I've tried this method, my card became 32GB
Then I put it into my Galaxy Note, it saw it also as 32GB, then I formatted the card with Gnote, then it became 64GB again
I was planning to create two partitions with minitools formatting tool, one was supoosed to be 16 GB FAT32 and the remaning part would be 48GB NTFS, and I was planning to use, Paragon NTFS to mount that NTFS partition on GNOTE.
But because after formatting on PC it became 32 GB I couldn't do that.
Any suggestions ?

thanks so much for this. I just bought a new 64 gb card for my phone and it "corrupted" on me twice. I plugged it in to my comp and it was exFat. Followed the directions here and formatted to fat32. Now I have to copy my files again. I hope this works. Oh and according to my phone, there is no update 4.1.2 for it. I am on 4.0.4 and it cannot find any updates so that doesnt really work for me.

THANK YOU!!
I had been trying to do thiis for 4 hours when i saw ur post! Thanks sooo much..at first i got an error while formatting, but then i quit all other applications as recommended by the software and it woeked perfectly on my HTC Sensation. Thank You Soooo much:laugh::good:

I was looking to format my card to Fat32 so I can use a Paranoid Android Rom. What happens when I want to flash another ROM and the new ROM is a Tochwiz Rom... Will I need to unformat the card or reverse it someway? I'm a newbie to this stuff.

Careyst said:
I was looking to format my card to Fat32 so I can use a Paranoid Android Rom. What happens when I want to flash another ROM and the new ROM is a Tochwiz Rom... Will I need to unformat the card or reverse it someway? I'm a newbie to this stuff.
Click to expand...
Click to collapse
No. Touchwizz roms and aokp/cm10 roms can both read fat32 sd cards. Because exfat is licenced from Microsoft AOKP can't incorporate the drivers needed to get exfat formatted card to work.
Short story is both roms can read/write to fat32 formatted sd cards. Only Touchwizz roms can read/write to exfat formatted cards. Unless you copy a lot of single files over 4GB in size stick with fat32 formatting.
Sent from my GT-I9300 using Tapatalk 2

sam-had said:
Hi guys,
I faced a problem with my 64gb. Sandisk micro SD and I solved the issue and I thought about posting the solution here that might help some of you.
so... the issue I faced is how to get TWRP recovery or CWM to mount my Ex sd card.
basically the problem is that the card is formatted in exfat or NTFS and in both ways it won't be recognized by TWRP and the only way to formate it in fat32 is by only one software because windows can not format more than 32gb in Fat32.
and here is how:
first: download EaseUS Partition Master Home Edition from this link http://download.cnet.com/EaseUS-Partition-Master-Home-Edition/3000-2248_4-10863346.html?tag=mncol%3bpop&cdlPid=10982635
Second : Now you can see a list of all of your hard drives. Note the one highlighted in blue on the grid. This is my 64GB MicroSDXC card in my USB Card Reader. Obviously the location of your card in the list may differ dependant on the number of drives in your computer
You’ll need to right-click on the drive in the list representing your 64GB MicroSDXC card and click “Format partition”
Third : You need to select FAT32 for the File System, and 32KB for Cluster Size.
EaseUS doesn’t immediately apply the changes you specify. Instead, it queues them up so that you can review and revise them before you commit to having the program affect those changes. then we need to press the Apply button.
that's it ... now you can enjoy your 64gb MicroSd and you can mount it in TWRP or CWM recovery .
your welcome
Click to expand...
Click to collapse
I tried what you suggested. However, the partition stayed at 32 GB only instead of 64 GB. Any more suggestions.
---------- Post added at 06:02 PM ---------- Previous post was at 05:56 PM ----------
dionysos77 said:
I've tried this method, my card became 32GB
Then I put it into my Galaxy Note, it saw it also as 32GB, then I formatted the card with Gnote, then it became 64GB again
I was planning to create two partitions with minitools formatting tool, one was supoosed to be 16 GB FAT32 and the remaning part would be 48GB NTFS, and I was planning to use, Paragon NTFS to mount that NTFS partition on GNOTE.
But because after formatting on PC it became 32 GB I couldn't do that.
Any suggestions ?
Click to expand...
Click to collapse
I also have the same problem, my 64 GB card has become 32 GB one. I used the suggested program to partition but still 32 GB. Can you explain what is Gnote and how to use it. Thanks

Same problem here also 32 everytime followed instructions exactly im using windows 8
Sent from my SCH-I605 using xda premium

GUI Format is an easy to use and fast solution too.

Szadzik said:
GUI Format is an easy to use and fast solution too.
Click to expand...
Click to collapse
exactly...much easier!

Ok
Sent from my SCH-I605 using xda app-developers app

I was having issues also got the sandisk mobile mate sd reader windiws noticed automatically as 64 gb used gui format worked perfectly
Sent from my SCH-I605 using xda premium

Just use Guiformat...small app attached

dionysos77 said:
I've tried this method, my card became 32GB
Then I put it into my Galaxy Note, it saw it also as 32GB, then I formatted the card with Gnote, then it became 64GB again
I was planning to create two partitions with minitools formatting tool, one was supoosed to be 16 GB FAT32 and the remaning part would be 48GB NTFS, and I was planning to use, Paragon NTFS to mount that NTFS partition on GNOTE.
But because after formatting on PC it became 32 GB I couldn't do that.
Any suggestions ?
Click to expand...
Click to collapse
Did you ever find out how to revert back to 64 GB. I am exactly in a similar situation with a 64 GB converted to 32 GB and do not know what to do?
Edit: I have used guiformat program also.

Careyst said:
I was looking to format my card to Fat32 so I can use a Paranoid Android Rom. What happens when I want to flash another ROM and the new ROM is a Tochwiz Rom... Will I need to unformat the card or reverse it someway? I'm a newbie to this stuff.
Click to expand...
Click to collapse
You can still use your card normally. I've done the inverse way (Touchwiz to AOKP) and works too.
The point is: Touchwiz based ROMs have support to FAT32 and exFAT. AOKP ones have support only to FAT32.
dionysos77 said:
I've tried this method, my card became 32GB
Then I put it into my Galaxy Note, it saw it also as 32GB, then I formatted the card with Gnote, then it became 64GB again
I was planning to create two partitions with minitools formatting tool, one was supoosed to be 16 GB FAT32 and the remaning part would be 48GB NTFS, and I was planning to use, Paragon NTFS to mount that NTFS partition on GNOTE.
But because after formatting on PC it became 32 GB I couldn't do that.
Any suggestions ?
Click to expand...
Click to collapse
vicky4112 said:
Did you ever find out how to revert back to 64 GB. I am exactly in a similar situation with a 64 GB converted to 32 GB and do not know what to do?
Edit: I have used guiformat program also.
Click to expand...
Click to collapse
xterra91 said:
Same problem here also 32 everytime followed instructions exactly im using windows 8
Sent from my SCH-I605 using xda premium
Click to expand...
Click to collapse
That's another point OP have forgotten. Your card reader must support microSDXC cards. Most readers support only microSDHC and these are maximum 32Gb storage. microSDXC has elevated this limit to 2TB. I had to buy myself a new card reader due to that incompatibility.
There's a fragment in Wikipedia which explains this situation:
SDXC cards are pre-formatted with Microsoft's proprietary and patented exFAT file system, which the host device might not support. Since Microsoft does not publish the specifications of exFAT and its use requires a non-free license, many alternative or older operating systems do not support exFAT for technical or legal reasons. The use of exFAT on some SDXC cards may render SDXC unsuitable as a universal exchange medium, as an SDXC card that uses exFAT would not be usable in all host devices. Since the FAT32 file system supports volumes up to the SDXC's maximum theoretical capacity of 2 TB as well, a user could reformat an SDXC card to use FAT32 for greater portability between computers (see below). FAT32-formatted SDXC cards can be used in a host device built for SDHC if the host device can handle 64 GB and larger volumes.
http://en.wikipedia.org/wiki/Secure_Digital#SDXC
Click to expand...
Click to collapse
I really sorry for my english, but I hope you and another people understand it. :good:

Micro SD card wont be mounted by Samsung Tab a6

So I have a Samsung Tab a6 7 T280 wifi and I've inserted a MicroSD card (128GB). I've done this with the stock os first and I just got the message card can be removed safely. and it wouldn't let me mount it.
Now I've installed the Tinker V5.1 Stock Rom over it and it still happens. (wanted a faster os on it).
I can reformat the card with twrp to be ext4 or exFAT and it doesn't change a single thing. if I insert the sd card I get a quick preparing card and then instantly the message card can be safely removed. clicking on mount sd card in storage from settings doesn't do anything except prompt same message.

I'd try a different sdcard.

Okay, so I hope I can help, I have the SM-T280, I do not use Tinker ROM, instead I debloated my stock ROM and use an SPA kernel by @_mone. If you're trying to extend storage to your tablet, you'll need to use a PC to partition the SD card two PRIMARY partitions. I used on Windows MiniTool Partition Wizard (free), and I used a FAT32 partition and an ext2 partition. With the stock ROM/kernel I had problems using ext4 or extFAT which didn't make sense to me but it is what it is, and I used the app Apps2SD to handle all the work.
The main thing, you need to make sure your SD card has TWO (2) PRIMARY partitions.
Good luck.

zenful said:
Okay, so I hope I can help, I have the SM-T280, I do not use Tinker ROM, instead I debloated my stock ROM and use an SPA kernel by @_mone. If you're trying to extend storage to your tablet, you'll need to use a PC to partition the SD card two PRIMARY partitions. I used on Windows MiniTool Partition Wizard (free), and I used a FAT32 partition and an ext2 partition. With the stock ROM/kernel I had problems using ext4 or extFAT which didn't make sense to me but it is what it is, and I used the app Apps2SD to handle all the work.
The main thing, you need to make sure your SD card has TWO (2) PRIMARY partitions.
Good luck.
Click to expand...
Click to collapse
What about the Sizes? As in one partition 60 GB the other one also 60 GB ? Or the fat32 partition 1 GB and the ext2 the rest?

Panslothda said:
What about the Sizes? As in one partition 60 GB the other one also 60 GB ? Or the fat32 partition 1 GB and the ext2 the rest?
Click to expand...
Click to collapse
FAT32 is not for large capacity storage. Use exFat. There isn't much point in having such a large ext2 partition. It's incompatible with media transfer protocols unless you use a Linux system.
This device fully supports exFAT. I use a 64gb sdcard no issues.

ashyx said:
FAT32 is not for large capacity storage. Use exFat. There isn't much point in having such a large ext2 partition. It's incompatible with media transfer protocols unless you use a Linux system.
This device fully supports exFAT. I use a 64gb sdcard no issues.
Click to expand...
Click to collapse
Well my current one is exfat formatted. works perfectly fine on PC only thing is its 128 GB.... I mean is that maybe the issue? that its to large?

Panslothda said:
Well my current one is exfat formatted. works perfectly fine on PC only thing is its 128 GB.... I mean is that maybe the issue? that its to large?
Click to expand...
Click to collapse
I wouldn't think so, I'm sure it supports 128gb cards.
Just partition it into to halves. First partition exfat. Leave the other unformatted and see what happens.

ashyx said:
I wouldn't think so, I'm sure it supports 128gb cards.
Just partition it into to halves. First partition exfat. Leave the other unformatted and see what happens.
Click to expand...
Click to collapse
partitioned into a 40 GB exFAT partition and left rest unpartitioned. Didn't change anything. if I pop it in the tablet I get a short preparing sd card notification then immediately an SD card safe to remove notification...
I'm really confused by this. The tablet is new so I doubt that it's broken but I don't know. Do you know if there's a way to check any kind of logs on Android like dmesg on Linux as an example to see what happens with the sd card?

Panslothda said:
partitioned into a 40 GB exFAT partition and left rest unpartitioned. Didn't change anything. if I pop it in the tablet I get a short preparing sd card notification then immediately an SD card safe to remove notification...
I'm really confused by this. The tablet is new so I doubt that it's broken but I don't know. Do you know if there's a way to check any kind of logs on Android like dmesg on Linux as an example to see what happens with the sd card?
Click to expand...
Click to collapse
It's best just try out another card to rule out the card.

ashyx said:
It's best just try out another card to rule out the card.
Click to expand...
Click to collapse
Welp gotta buy one first then :/

Panslothda said:
Welp gotta buy one first then :/
Click to expand...
Click to collapse
Nobody can lend one for a few minutes? Or try the card in someone else device?

Panslothda said:
So I have a Samsung Tab a6 7 T280 wifi and I've inserted a MicroSD card (128GB). I've done this with the stock os first and I just got the message card can be removed safely. and it wouldn't let me mount it.
Now I've installed the Tinker V5.1 Stock Rom over it and it still happens. (wanted a faster os on it).
I can reformat the card with twrp to be ext4 or exFAT and it doesn't change a single thing. if I insert the sd card I get a quick preparing card and then instantly the message card can be safely removed. clicking on mount sd card in storage from settings doesn't do anything except prompt same message.
Click to expand...
Click to collapse
According to Samsung, the T280 will support a 256gb SD card BUT I know from experience that SD cards over 32gb can be VERY touchy. If you use a PC to remove all of the partition and then let the tablet try to do its own formatting and it still doesn't work, I'd say you have an incompatible SD card. That doesn't mean the card is bad but that it just won't work in the T280.
As an example, a Samsung EVO+ card (which can be found on eBay for $30) will probably work while a "no name" card from China, probably won't.

lewmur said:
According to Samsung, the T280 will support a 256gb SD card BUT I know from experience that SD cards over 32gb can be VERY touchy. If you use a PC to remove all of the partition and then let the tablet try to do its own formatting and it still doesn't work, I'd say you have an incompatible SD card. That doesn't mean the card is bad but that it just won't work in the T280.
As an example, a Samsung EVO+ card (which can be found on eBay for $30) will probably work while a "no name" card from China, probably won't.
Click to expand...
Click to collapse
I always use Samsung EVO cards and they always work perfectly. Price per GB they are very reasonable too.

Scandisk ultra i find ok no matter what size
Sent from my SM-T585 using XDA-Developers Legacy app