I was having a problem with my Nokia N810 where, when I went to extend the virtual memory, it would then spit out “unable to extend virtual memory”, or something to that extent. After some searching, there was a suggestion that the internal memory card could have some bad blocks on it.

To mend this issue, I relied on a few tools, which are: df, umount, and fsck.vfat.

Firstly I had to find the location or where the main OS was being mounted. By using ‘df’ I discovered the location was at: /dev/mmcb1k0p1, this may be different for you, but definitely use df and find where a 2GB drive is being mounted that isn’t a removable MiniSD card.

 umount /dev/mmcb1k0pl

For those of you who don’t know why you would want to umount your OS’s filesystem before running fsck, have a look here:

http://www.cyberciti.biz/faq/can-i-run-fsck-or-e2fsck-when-linux-file-system-is-mounted/

I then ran:

fsck.vfat -t -a /dev/mmcb1k0p1

Lastly, I then rebooted my Nokia N810 and was able to extend my virtual memory!