Database Users

【Urgent】SD card become read only under android

Urgent!!!
I don't know if this is a bug or not. I used to copy files by selecting the disk drive mode. After that I will safely remove the device under windows before disconnecting the usb cable.
The problem is sometimes after copying files to sdcard, the SD card will become read only under android. For example I cannot copy or create files using file explorer. When using camera app it says "Unable to save file to SD card due to insufficient file permissions". When using album it says "SD card unmounted or not present".
After the problem occurs I cannot access the SD card via disk drive mode anymore, unless I physically removed and reinsert back the SD card.
The strange thing is I can still access the SD card in PC via card reader with no problem. I can also view the existing files in the SD card under android (eg opening .apk in SD card)
I tried flashing the ROM for 2 times and with a different SD card. Also I formatted the SD using Panasonic SD formatter and partitioned properly. The problem still appear after several access under disk drive mode. Million thanks!!!

I've noticed the same thing in the DL DesireZ v3.3 nand ROM...
But now since I've switched to skink_Clean_Desire_v1.0 I don't have the problem any more...
No problem solver I know... but just to confirm the issue!
It was also read-only when I had disk drive mode chosen and connected to my win xp pc!
so when I deleted files over the computer they still existed...
I always remove the sd card securely!...
hope this helps a little bit!

Memory cards get weak after awhile...Had d same issue with a Memory card...it works well on WinMo but messes up just as u described in android after a format n a few read & writes...Froyo has also been reported to ruin memory cards...Summary, there's no real solution as i've googled all over....My advice is for you 2 get a new memory card, capacity & class (d higher d number, d better its read & write speed) is up to you...I'm using a class (4) 8GB card n its been alright.
P.S. Stop transferring files via d disk drive option in android..stick to using memory card readers or d MAGDLR function (though some also report file errors with dis).

voncrane said:
Memory cards get weak after awhile...Had d same issue with a Memory card...it works well on WinMo but messes up just as u described in android after a format n a few read & writes...Froyo has also been reported to ruin memory cards...Summary, there's no real solution as i've googled all over....My advice is for you 2 get a new memory card, capacity & class (d higher d number, d better its read & write speed) is up to you...I'm using a class (4) 8GB card n its been alright.
P.S. Stop transferring files via d disk drive option in android..stick to using memory card readers or d MAGDLR function (though some also report file errors with dis).
Click to expand...
Click to collapse
Thanks for your reply
But how come windows and wm can read and write normally but it doesn't work in android?
Also, I have been using NAND and its disk drive option to transfer file in Cotulla's desire stock Rom and there is no problem at all. Would the problem be related to app2sd since the card has a ext4 partition?

do a chkdsk on your micro-sd card. let it repair and then don't delete the LOST folder in your sd card. ^^ you will be able to mount as read/write after this

victortan001 said:
do a chkdsk on your micro-sd card. let it repair and then don't delete the LOST folder in your sd card. ^^ you will be able to mount as read/write after this
Click to expand...
Click to collapse
Try a chkdsk as well...But in my experience, i did it several times & it only acted as a band-aid...As it reverts to read only ltr on...

voncrane said:
Try a chkdsk as well...But in my experience, i did it several times & it only acted as a band-aid...As it reverts to read only ltr on...
Click to expand...
Click to collapse
So is this a SD card problem or ROM problem?
Previously I had been using Cotulla Desire stock Rom for a month and the problem didn't exist.
I don't mind buying a new SD card if it can completely solve the problem. Thanks

storage confusion(memory)

im just a bit confused about the sd card in general,,my phone of astro file manager has like,,,phone>sdcard>externalsd...which is weird and i never know if im searching my phone or my sd card...
when i try and load things i have dragged on my pc desktop onto sdcard they ussualy then go into phone>sdcard>external sd and never just .... sd card
i was trying to load images into sketchbook mobile and i could only do so from the phones camera pictures where i now have to drag everything omn the desktop....why cant i make use of my 32gb external sd card in this regard?
where are the applications for augmenting tehe sd card memory or whatever not for just having aplication sent to sd card memory,
does the sd card just work like say,,an external usb hard drive for a computer except you can put some inatalled application on it,,,,,but nothing like media,,photos videos etc?
or is it just me?
cheers

Your phone aka tab is divided into parts
System arnd 2 gigs
SDCARD arnd 14 gigs
System works as space for system
Sd as your sd card - Flashing doesn't destroy data on this
And if you place another SD card then it is termed as external_sd
So primary storage for you phone is SD Which is its own space
PS : there is usb storage folder (in sd card directory) also which is for your pendrives, etc
-----------
Sent from my sexy NOTE @ 1.4ghz..
Works like a charm.. Please excuse my brevity.

dx.varun said:
Your phone aka tab is divided into parts
System arnd 2 gigs
SDCARD arnd 14 gigs
System works as space for system
Sd as your sd card - Flashing doesn't destroy data on this
And if you place another SD card then it is termed as external_sd
So primary storage for you phone is SD Which is its own space
PS : there is usb storage folder (in sd card directory) also which is for your pendrives, etc
-----------
Sent from my sexy NOTE @ 1.4ghz..
Works like a charm.. Please excuse my brevity.
Click to expand...
Click to collapse
there are a lot more partitions than the 2 you mentioned!
efs
system (~1GB)
data (~2GB)
hidden
...
as far as i remember the note has 8 or 9 partitions (all of them have to be
subtracted from the initial 16gig (unformated!! formated it will be significantly less) storage!
so from your 16gigs you should see around 11GB as free mem on '"sdcard"!
i can't tell exactly because i have the 32gb internal version. with it a little more than 25,5GB are shown as "total" available (not free) storage!

as mentioned above
the rom has 1gb partition
data/system has 2gb
rest is used for sd card purposes around about 11.8gb
the device sees the internal memory as sd memory, the external sd card is seen under /external_sd
the file mangers will automatically go directly to the internal storage when browsing

i understand that I get about 12 GB left from 16 internally but.....
what can I actually do with the external_sd?
I cant load jpeggs onto sketchbook mobile at the moment. Reaally annoying
Any reason as to why it wouldn't recognize files in the external_sd?
Also we were saying about partitins and other random folder in the phone SD and external sd? anyone got a referrl to which ones can be deleted and generally how to make the phone and external sd card more navigation friendly?
please this would be really helpful

external_sd is your physical micro sd card, you can do what you want with it, i personally have all my music and movies on there
what files are you putting on the card?

Richy99 said:
external_sd is your physical micro sd card, you can do what you want with it, i personally have all my music and movies on there
what files are you putting on the card?
Click to expand...
Click to collapse
i guess he has no card installed
Sent from my GT-N7000 using xda premium

mem speed

Hi,
I'm using a Wildfire with CyanogenMod v7.1.0.1. When I changed to a 16G sd-card recently I began to think about the various app-to-sd methods and put an additional EXT partition on the card "just in case".
Just one question: How does my sd-card performance compare to internal flash speed? How can I find out? "SD-Tools" benches my card at 6 MB/s write, 25 MB/s read. What's the speed of the internal flash?
Regards
edit: second question reg. app2sd-method removed (found the right one for me myself in the meantime)

intenal flash faster than mem card i think so!

Try S2E app from market

[Q] GT-i9500 SD Card issue

Hi.
I am using a class-4 16GB micro sd card in my S4.
I have been saving my camera photos on the sd card.
But whenever i open the Camera folder in Gallery, it takes a lot of time to load the folder and even to open an image. This happens only for the images and videos saved in the sd card folder.
What may be the problem ? Is it a problem with my phone or my SD card speed ??
Please help with a solution. Thanks

susmitpatil said:
Hi.
I am using a class-4 16GB micro sd card in my S4.
I have been saving my camera photos on the sd card.
But whenever i open the Camera folder in Gallery, it takes a lot of time to load the folder and even to open an image. This happens only for the images and videos saved in the sd card folder.
What may be the problem ? Is it a problem with my phone or my SD card speed ??
Please help with a solution. Thanks
Click to expand...
Click to collapse
Sd card speed and image size etc will be slowing the same
.

123hiten said:
Sd card speed and image size etc will be slowing the same
.
Click to expand...
Click to collapse
So do you mean to say that i should buy another sd card?

Micro SD Card issues

I have a Samsung Galaxy S4 which I recently upgraded to the official Lollipop 5.0.1 update. I also added a new Samsung 64 GB (Class 10) Micro SD Card. When I use the Micro SD Card in a card reader in Windows 8, I can easily add / delete files without any problems. When I use the Micro SD Card in the Samsung Galaxy S4, it works fine for a while, then suddenly files and folder automatically disappear or files become corrupt; photos clicked with the camera disappear instantly. I am not sure if the problem lies with the Micro SD Card, the phone, the OS or some app.
Please could someone help!

I would suggest to format the card in your phone (if not already done). And then try it again.
Sent from my black pearl using Tapatalk

in reply to micro sd post
I found that you cannot even use the sd card as storage for apps with the 5.0.1 rom this is a issue for me as far as the sd card corrupting files im not sure i am using a 16 gig and i had to set everything manually to save to sd card or move it over myself such as the camera and downloads, but for apps not a chance

aaron kid69 said:
I found that you cannot even use the sd card as storage for apps with the 5.0.1 rom this is a issue for me as far as the sd card corrupting files im not sure i am using a 16 gig and i had to set everything manually to save to sd card or move it over myself such as the camera and downloads, but for apps not a chance
Click to expand...
Click to collapse
This is also the case on KitKat.

aaron kid69 said:
I found that you cannot even use the sd card as storage for apps with the 5.0.1 rom this is a issue for me as far as the sd card corrupting files im not sure i am using a 16 gig and i had to set everything manually to save to sd card or move it over myself such as the camera and downloads, but for apps not a chance
Click to expand...
Click to collapse
CM12 has the Move apps to sd feature.