Ubuntu: How to fix "error: unknown filesystem. grub rescue＞?
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Question: I get this error:
Error: unknown filesystem.
grub rescue＞
I'm not exactly sure what I did. I believe I installed Ubuntu over Windows on
my Acer netbook. I then tried to install http://en.wikipedia.org/wiki/
Linux_Mint, but it wouldn't start installing.
I turned the netbook off and back on. Now I get the error.
I have read a lot of other questions like this, but in my case I cannot boot a
CD. If I put a Ubuntu CD or a Linux Mint CD into my external CD/DVD drive and
change my BIOS to boot the CD-ROM first, it just gives me the same error
screen.
Update copied from comment dated 2012-05-26 02:54:29Z
Here are some results from my commands:
grub rescue＞ls (hd0) (hd0,msdos5) (hd0,msdos1)
grub rescue＞ls (hd0,msdos5) unknown filesystem
grub rescue＞ls (hd0,msdos1) unknown filesystem
grub rescue＞ls (hd0) unknown filesystem
Solutions Sample (Please watch the whole video to see all solutions, in order of how many people found them helpful):
== This solution helped 11 people ==
Boot your system from the Ubuntu Live CD and try this, it worked wonders for
me.
https://help.ubuntu.com/community/Boo...
== This solution helped 1 person ==
This happened to me after I delete a partition that was located before the /
boot partition.
To fix it, I ran an Ubuntu live USB stick, mounted the root partition to /mnt
and the boot partition to /mnt/boot, and I ran this command (replace /dev/sda
with the correct hard disk):
sudo grub-install --root-directory=/mnt --boot-directory=/mnt/boot /dev/sda
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