[Q] Link2SD problem on SG S2 - Omni Q&A

I have been using OmniROM KitKat on my Galaxy S2 for a while with no problems. I've recently had a GPS issue (still don't know the cause but that's another issue for another day) so decided to update my ROM to the latest nightly. The update went well, but then I found that I could not access any of my apps that had been copied using Link2SD.
I had created an EXT3 partition on my SD card and linked all files onto there using Link2SD. It had been working perfectly before but the update had obviously changed something in my system. When I run Link2SD, I get the following message:
mount: Device or resource busy
Googling this it looks like the partition is already mounted (a2sd?) or some scripts are missing. (Link2SD still has root permissions) I've had a look in init.d but can't see anything remiss, though I'm moving out of my comfort zone here.
Can anyone tell me what I should do next? Do I need to delete and recreate the EXT3 partition, copying the data back on to it? Would uninstalling and reinstalling Link2SD help, or would that cause even more trouble?
Finally, if I do another ROM update, what should I do to stop this happening again?
Thanks for your help.

I've had some success with this. I reformatted the partition to be FAT32 and Link2SD accepted this and created the necessary mount links. I then copied the files (apk etc) back onto the partition and everything is working again.
Now is FAT32 a good option for this partition or is it best to use EXT?
Ta

Related

[Q] How can i check, if my app2sd+ is working correctly?

Hi @
using mdjs 2.6 and sucessfully created the ext4 partition for a while.
But how can I check, if the apps are installed correctly on the ext4 partition?
If I check my phone storage it seems, that the phone storage is used for the installation...cause there are "only" 100Mb free.
Removing the sd card causes all apps to stop working.
Using Root Explorer shows me a folder "sd-ext"..with all installed apks...
BUT also in data/app are all installed apks.
I'm very confused...
any suggestions?
Suggestions as to what? They're obviously in your Ext4 partition if you can see them there with Root Explorer. Don't really know about the /data thing though. Maybe delete an .apk from there and see what happens?
I use titanium backup to see how much room i've got left on my ext partition.
After installing apps it's normal for the internal memory to drop, reboot to see effect.
apps will be auto installed to ext partition if you've got and rom that supports it.

link2sd

installed link2d on stockrom after root with universal androot and formatted the second partition with fat32 since it doesn't support extX partitions.
Everything works.
link2sd asks what to link: app, dalvik-cache and library
Maybe must play with these settings to have WIDGETS still working when linked ?
I remember they usually stop working when installed on sd...
this omap is really fast !!!
with flash working great too !
I've used it just for games and a few things that are bulky like opera. I didn't try and widgets/livewallpapers because of the time spent preparing the SD card on startup.
It's so much easier using this when you don't have to worry about apps eating up all of your available storage.
I use it with almost everything. Only things that I'd like to have available when things go wrong and I have to boot without the card, I leave unlinked.
BTW. I'm using a kernel driver that was in the app2card .apk file to allow be to mount the partition as ext2 instead of fat32
A good thread on how to re-partition the SD card
Thanks to bakpinar
ghostwheel said:
I use it with almost everything. Only things that I'd like to have available when things go wrong and I have to boot without the card, I leave unlinked.
BTW. I'm using a kernel driver that was in the app2card .apk file to allow be to mount the partition as ext2 instead of fat32
Click to expand...
Click to collapse
Can you post details about the driver file to use? I guess you must move it somewhere...
I dont need them since i'm happy with fat32 but someone could find them useful
Sent from my MotoMB511 using XDA App
I'd be interested in finding out what you did to get app2card working....
I used it to partition the sd card fine (well when i finally managed to click the done button... grr...) and it copied apps to the same partition but it won't mount the partition and has kept the apps in the main memory too...
is there better apps or a way to do it that's easier?
does the flipout support ext2?
I love this phone to bits already but it's a major let down when you can only get a few apps on it with it being full and having a fit!!
Meh.... tried link2sd... now my home button doesn't work and nothing will download from the market...

Guide to partition SD card and use with Link2SD to store apps

I have been looking for something like this for a while. The flipout lacks internal memory and it soon becomes a problem if you want to have a good set of apps.
Here's what you'll need:
1. Rooted Flipout (I won't post instructions to this step, look for "Universal AndRoot")
2. Partitioned SD card (see below for instructions), depending on the method, you might need a phone with CWM to do this and ADB installed on your PC.
3. Download Link2SD from Market
So here are the steps:
1. Partition your SD card. There are many ways to do it. I will post two ways:
Use MiniTool Partition Wizard Home Edition
My PC didn't like this tool and I wasn't able to use it. However, it should be quite easy, you just need to put your card in a card reader and build two partitions with the following characteristic:
First partition will be your main card partition, should be of the whole card size minus the extended partition you want to create
Second partition should also be fat32 (link2sd didn't like ext2 nor ext3 on the flipout, it only worked with fat32)
Use CWM. I personally didn't want to install it on the Flipout, so I used a Samsung Epic 4G for the steps. You should be able to use any phone with CWM to do it, put your SD card in the phone with CWM and boot into recovery:
adb shell reboot recovery
parted /dev/block/mmcblk0 (open partition manager for SD card)
print (prints partition table)
Here you should have one partition table, starting at some point and ending at some point like 7969 if your card has 8GB. Take note of the End value as you'll need it.
rm 1 (deletes partition 1, this will erase all data on the SD card)
mkpartfs primary fat32 0 7425 (creates a new primary partition, the second number should be the value you took note of in the last step minus the size in MB of your desired extended partition).
mkpartfs primary fat32 7425 7937 (creates the new partition for applications, starting at the end of the last partition and ending on the max size of the card. In this case I used fat32 as I couldn't do it with ext3 nor ext2, link2sd didn't like this format on the flipout for some reason).
The partitions are created and you should be able to go to the next step.
3. Reboot your flipout with the partitioned SD card, make sure to have link2sd installed.
4. Open link2sd, it will take a while, ask for root permissions (always accept and make sure to have Remember checked).
5. It will ask for the partition type, select fat32. If you are asked to reboot your phone you have everything setup, otherway please post your problem.
6. Once rebooted, open link2sd again and go to settings and configure. I don't like having all applications automatically linked as widgets and this kind of apps can fail if they are on the SD, so I have this setting unchecked. However this is a personal decision.
7. To move an app to the card, hold your finger on it and when the menu appears, press link and confirm.
8. To move an app from the card to the phone, hold on it and press unlink, check everything and wait for the app to be returned.
Further Tips:
Avoid moving apps to the SD that are use widgets or that run all the time like: messenger apps, alarm clocks, climate widgets, etc. I tried one or two without any failure but I feel they could be less reliable this way.
Don't remove your SD card if the phone is turned on, now it has a partition that is used by the system, if you remove it you could have issues, I would only remove the card with the phone turned off completely and not boot without the card.
I made some tests connecting the USB cable to the PC and using the phone in storage mode, the PC could see the primary SD card partition and the phone could still work with apps on the second partition, so it seems to be stable in this sense.
If you need to switch to another card, you would have to setup the new card in the same way; I don't know yet if backing up the second partition and restoring it to the new card will work. If your data is critical use some SW like Titanium backup to back up the apps that are linked, remove them completely and restore when you have the new card setup.
So, this has worked for me like a charm, the phone really seems stable and I have so far like 150MB of apps on the SD card. No need to have a newer Android version, it seems very stable.
Disclaimer:
Any process that involves rooting your phone and partitioning can potentially cause data loss and/or bricking your phone. Do this only if you are 100% sure of what you're doing, I will take no responsibility for any data loss / damage caused by this process.
If you have any questions I will be glad to help.
Hi great post above
I rooted my phone and I partitioned my sd card into 2 partitions , both FAT32 primary 3.7GB and when i open link2sd and select either ext 2 or ext 3 I get an error message
"Mount scrip error
Mount scripe cannot be created.
mount: no such device
ext 2 may not be supported on your device. Try FAt32 on the second partition"
Has anyone come accross this problem before ?
Hi,
When you open link2sd,scroll down and select fat32. I tried formatting the second partition with ext2 and ext3 wit no luck. Fat32 is working just fine.
Regards
Hi Thanks a million that worked great
thanks
hi i tried wat u told but after some time link2sd is showing failure that "cannot link readonly" can u help me
Your guide works great. Finally I can have all apps I like to have installed at once.
mschmiedel said:
[*]If you need to switch to another card, you would have to setup the new card in the same way; I don't know yet if backing up the second partition and restoring it to the new card will work. If your data is critical use some SW like Titanium backup to back up the apps that are linked, remove them completely and restore when you have the new card setup.
[/list]
Click to expand...
Click to collapse
I can tell some experiences with backups.
Before I had blur stock rom with link2sd and changed to deblur central europe rom. After reinstalling link2sd all apps where still gone.
And even after restoring all user apps with titanium backup they were restored to phone memory. I had relink them with link2sd manually and to batch restore with titanium backup twice because it broke down in the middle because phone memory was full.
Unfortunately link2sd is no magically way to have them backed up apps and to be independent from the rom. Titanium backup is still needed but that is fine. Nothing seams broken after restore with TI and relink with link2sd.
lovdanie, it's strange, had no issues with the tested phone yet, I partitioned 500mb and it has already like 200-250MB of apps linked and is working great, no issues.
One thing that could have happened is that you removed the SD card. Are you sure the SD card hasn't been touched or formatted?
bagers, it's not really a magical solution, it's just a way to get more space on a phone that lacks internal memory...
Regards
Just for some info.. under windoze try the "MiniTool Partition Wizard Home Edition" makes partitions like charm..
Guys any one have links for disk partitioners? minitool is not a freeware as u have t buy it when you apply the partition. any one know a way roubnd this? please help
miniProBhashi,
That's why I always use CWM to partition the SD card. As I don't have it on the Bllur, I put the card on another phone I have with CWM and it always works... Maybe if you have a linux PC you could do the same thing...
Regards
Help
Hi, I just partitioned my SD card. When I open the Link2SD app, it did prompt me to select the file system of the SD card's second partion, however, after I select FAT32/FAT16, Link2SD could not gain root access, there's no pop-up of indicating me to select "Allow" on the Superuser Request. Now wot do I do. Please help, thank you...
Well, I would start checking the SuperUser app to see if there is some exception in there. If you don't have it, check out if your phone is rooted by installing some other app that requires root access.
If not, check the root method for your phone.
If it's the Motorola Flipout, download version 1.6.1 from this thread, install it and run it:
http://forum.xda-developers.com/showthread.php?t=747598
Regards
mschmiedel said:
Well, I would start checking the SuperUser app to see if there is some exception in there. If you don't have it, check out if your phone is rooted by installing some other app that requires root access.
If not, check the root method for your phone.
If it's the Motorola Flipout, download version 1.6.1 from this thread, install it and run it:
http://forum.xda-developers.com/showthread.php?t=747598
Regards
Click to expand...
Click to collapse
My phone is Galaxy ace, and superuser doesnt prompt anything on start-up.
Tried rooting manually, doesn't work as well
Hi,
I would try on a Galaxy Ace forum to check for the rooting process and validate if your phone is really rooted. When you are 100% sure you have root you can come back to this post and we can check if there's some other issue...
Regards
Flipout problem
Done all u told...
Then this problem came..
Mount script cannot be created.
mount: Invalid Argument
p0kjats said:
Done all u told...
Then this problem came..
Mount script cannot be created.
mount: Invalid Argument
Click to expand...
Click to collapse
Hi,
Have seen similar problems when using ext filesystems. Are you 100% sure that the secondary partition on the sd card is fat32? It really should work on the flipout without any issues.
Remember that you need:
* Rooted flipout
* Partitioned sd card (secondary partition must be fat32)
* Link2sd opened and allowed to use root permission
If you are sure you did everything stated above, we can look at it with more detail. What tool did you use to partition the sd card?
root permission
hi,
i have installed Link2SD from Market to my lg optimus p500 os,gingerbird2.3.3,when i stared to move app to sd it asks root permission.
so pls guid me to activate root permission in my device
drnags said:
hi,
i have installed Link2SD from Market to my lg optimus p500 os,gingerbird2.3.3,when i stared to move app to sd it asks root permission.
so pls guid me to activate root permission in my device
Click to expand...
Click to collapse
Hi,
It doesn't make much sense to use Link2SD if you're on Gingerbread as your OS natively can copy apps to the SD card (at least some of them). Just go to "Manage Applications", and select the app you want to copy, there should be an option to "Move to SD"...
If you still have some good reason to use Link2SD, you should first look in a forum for your specific device to find out how to obtain root (I cannot help because it varies for each device)... Once you have root access, I can help you out with this process.
Regards
miniProBhashi said:
Guys any one have links for disk partitioners? minitool is not a freeware as u have t buy it when you apply the partition. any one know a way roubnd this? please help
Click to expand...
Click to collapse
When I partitioned mine I used GParted Live. It's a Linux-based boot disk, but you don't really have to know anything about Linux to use it. Just download the .ISO and burn a CD, pop it in your PC and boot off it. Its free, graphical (not command line) and relatively easy to use. There is also an option there to set it up to boot live off a USB drive, but that's a bit more involved to set up.
gparted . sourceforge . net / livecd.php (sorry, it won't let me directly post links yet)
If you can burn a .ISO to a CD, you can probably figure it out. Just make sure you pay attention to which disk you are partitioning (look at the sizes) so you don't accidentally re-partition the hard drive in your PC.
EDIT: If there is anything you need to back up off the SD card, I would do that in Windows first, and then copy it back using Windows after. You CAN do this with GParted Live but there would be additional steps to mount / unmount the Windows partition on the PC that you want to copy to.
the bootstrapped recovery seems to be having a partitioning tool.
Maybe im wrong, haven't used it though

Any script to move part of the internal data to SD ext in Lollipop 5.1.1?

I am looking for a script that basically covers the Link2SD functionalities. But using mounts instead of links. I actually made one for GB that worked up to KK, but now Lollipop is behaving in some weird ways regarding binding mounts. I also tried Mounts2SD (the apk) and I get the same results.
To make things a bit more clear, I'd like to be able to at least mount /sd-ext/dalvik-cache over /data/dalvik-cache, where /sd-ext is the mount point for the second partition (in ext4 format) of the external SD card. Does anyone use/know about a working script for 5.1.1?
I'm using FolderMount from the PlayStore. Didn't try the dalvik cache but for normal sdcard -> ext-sdcard its working perfectly.
Well, yes, FolderMount helps with games or any other app with large obb data. I use it indeed. But I need to move stuff from /data to the external 2nd partition because 5GB with Lollipop 5.1.1 are not really much. Especially considering that after 3.70GB one starts to get the annoying notification about low internal memory.
Yes my comment is stupid, you need a script which is doing this before any app startup because dalvik is the optimization for these.
Just an idea not sure if init.d is executed in the right time. But if your rom has init.d enabled (not emulation, real init.d) then you can put a script in /etc/init.d which does the mount job.
That's what I need. As I wrote I made that script already on GB and recovered it for KK. Just a couple of modifications and it was up and running again.
The problem is that with Lollipop Android keeps an hold of the original /data and all its subdirectories. So whatever I mount doesn't matter to it, it still keeps using the /data folders as if nothing happened. So I wondered if anyone had found a solution for it and made a new script 5.1.1 ready.
Ok, it's probably impossible to do (unless of having access to the kernel RAM disk). I've found out that the issue could be related to the separated mount namespaces. There is an option in SUperSU and I disabled it. After mounting the directory and starting ART it crashes badly, rebooting the phone (kernel included I believe).

SM-T580: Issue with Card Card setup (Link2SD and Titanium access)

Edit: Title should read "SD Card" (how to edit that?)
I have root and I am trying to get Link2SD to work. I have created the FAT32 (primary) and EXT4 (primary) partitions but I keep getting a mount script error ("unable to mount") (Also tried EXT2)
I am doing the same thing as I have done on several other devices and it is not working on the samsung.
Also, I am having issues with getting Titanium Backup to wrtie to the SD card too. I tried the Kitkit SD card patch but it failed.
I know the SD card works so I am thinking it is a wonky Samsung thing?
Thoughts or advice
Edit: Pulling SD card, re-inserting and rebooting and then Link2SD reports that the 2nd partition is not accessible during boot (and suggests quick boot to fix which it does not). Samsung says the FAT32 is fine but the EXT is "corrupt" but I have confirmed on two other devices it is fine.
So this seems to be some sort of access thing. Maybe related to the removal of encryption patch as part of the TWRP install?
Edit2: cat /sys/block/mmcblk2/device/type gives back "no such file or directory"; (whereas mmcblk1 gives SD)
Total commander shows sd-card (which is internal /storage/emulated/0), sd-card(2) "/data/sdext2"), and USB (SD FAT32 as /storage/BDB2-8960)
Got TB fixed anyway. Backup one file (on device internal location), move the directory to external SD card, then TB decided it is was OK to include that location under settings so select new location.
Now need Link2SD. Could this be a mount script write issue? Encryption issue (I removed it from internal via a scripted)?
Runings Mounts2SD, installed scripts, reboot but it says External is "not mounted". Link2SD still fails with those scripts installed.
chemie99 said:
Got TB fixed anyway. Backup one file (on device internal location), move the directory to external SD card, then TB decided it is was OK to include that location under settings so select new location.
Now need Link2SD. Could this be a mount script write issue? Encryption issue (I removed it from internal via a scripted)?
Runings Mounts2SD, installed scripts, reboot but it says External is "not mounted". Link2SD still fails with those scripts installed.
Click to expand...
Click to collapse
Link2SD never worked for me either no matter what I did. Apps2SD works flawlessly. Links data, apk, obb files and everything without any issues on ext4 format.
moxalis said:
Link2SD never worked for me either no matter what I did. Apps2SD works flawlessly. Links data, apk, obb files and everything without any issues on ext4 format.
Click to expand...
Click to collapse
I tried installed Apps2SD but it never asked for root and decided half the apps could not be moved. I figured it was just offering the usual stock "move apps" which moves marginal amount.
Samsung says that the EXT partition is corrupt but Aparted says it is fine. EXT2, and EXT4 created in either Minitool or Aparted are simply not read.
Mount2SD adds scripts to mount but the partition remains unmounted after reboots.
What format does Samsung want?
chemie99 said:
I tried installed Apps2SD but it never asked for root and decided half the apps could not be moved. I figured it was just offering the usual stock "move apps" which moves marginal amount.
Samsung says that the EXT partition is corrupt but Aparted says it is fine. EXT2, and EXT4 created in either Minitool or Aparted are simply not read.
Mount2SD adds scripts to mount but the partition remains unmounted after reboots.
What format does Samsung want?
Click to expand...
Click to collapse
Samsung reads the partition as corrupt but Apps2SD is using it just fine. You should delete any mount scripts and re-create them through the Apps2SD application.
moxalis said:
Samsung reads the partition as corrupt but Apps2SD is using it just fine. You should delete any mount scripts and re-create them through the Apps2SD application.
Click to expand...
Click to collapse
How do I manually delete the mount scripts?
chemie99 said:
How do I manually delete the mount scripts?
Click to expand...
Click to collapse
There is the option "Delete mount scripts" in the Apps2SD app. Check their FAQ page for any questions, it's pretty helpful.
Hello! I was having just the exact same problem with my T580.
I just loged in to say how I fixed it:
Open SuperSU app -> Settings.
Check "Enable su during boot"
Uncheck "Mount namespace separation".
After a reboot, Link2SD detected the 2nd partition!
EDIT: Now I fin another issue. If I try to link Obb, it says my device is using "sdcardfs". It offers to install fuse insted to fix it, but after rebooting I still getting the same message.
What could I do?
otamaglimmer said:
Hello! I was having just the exact same problem with my T580.
I just loged in to say how I fixed it:
Open SuperSU app -> Settings.
Check "Enable su during boot"
Uncheck "Mount namespace separation".
After a reboot, Link2SD detected the 2nd partition!
EDIT: Now I fin another issue. If I try to link Obb, it says my device is using "sdcardfs". It offers to install fuse insted to fix it, but after rebooting I still getting the same message.
What could I do?
Click to expand...
Click to collapse
Seems Link2SD does not like Marshmallow so I switched to Apps2SD (which also suggests what you did). It would not create the partition itself but took windows EXT4 and after a bunch of config, worked. The issue I now have is that Samsung still thinks the card is corrupt (which it isnt); any EXT partition and it says that. So on any reboot it greets me with a system notification of a corrupt card (which I want to get rid of but so far can't)..
I did try adoptable using a scripts from this site (didn't work) and the Apps2SD option. Seem to work on device but windows only saw the device memory so would not copy anything when it reported full.
took another kick at the cat today; installed Apps2SD, created mount scripts, but now, for reasons unknown, it no longer reports the SD as corrupt on boot (although it does say that partition is corrupt from the storage setting menu. Weird. No idea why it is no longer doing this. I will say the reinstall was funny. I had to delete and recreate the mount scripts several times (all said it worked) to actually get apps to move without disappearing. perhpas I ended up with a different mount script method in all the trying

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