I have ubuntu 12.04 on my desktop.
I plugged in my tablet (pandigital) to the usb to put music files on it, onto the memory card (32 gb pny microsd)
The files (50 files) began copying fine, but after about 50% it got slower and slower and slower, then finely stopped and ubuntu gave an error that the microsd card could not be found.
After a few seconds, it opened up like I had just plugged it in, only now I can't copy files to it because it says it is "read only".
I did a 'safely remove', and restarted my tablet, but now it says the card is not mounted or has no files.
I put the card into the card reader on my desktop, and ubuntu finds it, with all the files, but wont let me copy any files to it because it is 'read only'.
I put the card in my windows laptop, and it also says it is read only.
fsck dosfsck, chown, and remounting the drive all fail because "read-only file system"
Windows chkdsk finds nothing wrong, but cannot do a "automatically fix file system errors" because it is a "read only file system".
Can I fix this or do i need reformat and start all over.
Then I tried to do this:
I took a 16gb pny card that was in my music player and i put it in the tablet and formated it with android.
It is a known good memory card. If this works then it had to be a bad 32gb pny card.
I copied files from the tablet's internal memory onto the sd card and it copied them fine.
Next I copied 1 or 2 pictures from my ubuntu desktop computer and it copied them fine using nautilus and drag and drop method, as well as 2 or 3 songs.
Then I tried to copy 10 songs at once and it copied the first ones ok, then it got slower and slower and finely after about 5 minutes it said there was an error copying because it couldn't find the memory stick anymore.
So then i turned off the tablet and put in the memory stick to the card reader and it is read only now, my windows laptop also said it is read only.
I then erased it, formatted it in windows on my laptop, and then I copied files from windows to it almost 4 gb and no problem and very fast.
So i put it into the tablet and it can see all the files and i copy them from the card to the internal memory with no problem.
Then i put the card in my ubuntu 12.04 desktop and after Copied 6 songs, about 56 mb, it slowed down and finely said it can't find the device then it was read only again. I started my desktop with the live dvd and tried it from there - same thing, still made it read only.
I took my 32gb card and reformatted it and in windows it works just fine and in the tablet it works just fine.
I want to know: how can I copy files from ubuntu to the card without making read only?
And finally I tried this:
I had an idea to download a brand new live disk of ubuntu 12.04 and boot my laptop to ubuntu.
Just to make sure, I bought a new memory card (8gb).
I used windows chkdsk to make sure the card was good, and no errors found.
I used windows to copy "my documents" (about 200 files) and it only took a minute to copy with no problem.
Then I erased them and ran chkdsk again, and no problem.
So the card is good right?
Then I booted my laptop to the ubuntu live disk and tried to copy the same files from windows documents to the card and it copied and copied and copied and got slower and slower and finely it gave an error that it couldn't find the card anymore.
Then I rebooted my laptop to windows (xp) and ran a chkdsk and it's read only.
and I put it in my tablet and it can't mount it.
In conclusion:
The only thing that makes my cards read only is ubuntu and on 2 different machines all together. What is the way to fix it?
