Possible Duplicate:
Grub rescue - error: unknown filesystem
I was using Ubuntu 12.04 x64 as a Virtual Box guest. Because I started with it just to do some tests, the VM was created just with 10 GB but grown fast, then I wanted resizing it. Of course, I was a fully noob... No backup before doing it.
After some reading, I thought it would be so simple as:
VBoxManage modifyhd MY_DISK.vdi --resize 81920
Unfortunately, no boot:
error: unknown filesystem.
grub rescue>
Then I tried many suggestions, including Boot-Repair as described here: grub rescue prompt after install installing Ubuntu in a dual boot.
Nothing has worked. It seens that my Linux partition isn't there anymore?! Here is the Pastebin with all the information collected by Boot-Repair.
And the last try, the GParted Live CD can't also recover any data, saying that there isn't data on any partition. Well, I should just give up? Or some way to recover this disk?