Grub rescue, what to do?

Question

All I get is:

error: unknown filesystem
Entering rescue mode ...
Grub rescue>.

Please help I don't have any idea what to do. I don't have the disk either.

Do you have another computer to work with or borrow? I'd suggest getting Super grub disk on a USB flash drive or CD then. — ike, Nov 12 '14 at 03:21
See this guide:http://www.supergrubdisk.org/wizard-step-put-super-grub2-disk-into-an-usb-pendrive/ — ike, Nov 12 '14 at 03:23
No I don't have access to another computer. Can I just do something to factory reset the computer. — Jody Brock, Nov 12 '14 at 03:26
Unless you have some way to boot from an external media like USB or CD, no. If you have a few days, you could buy a cd from Canonical here and wait for it. What about an old Windows installation disk? — ike, Nov 12 '14 at 03:31
did you have windows on it before, sometimes there is a recovery partition you can reinstall windows from. Google you computer model recovery partition — user60812, Nov 12 '14 at 04:43
It is possible to boot from the grub rescue prompt with no other software - that's why it's called grub rescue. It's a bit painful, but some help is available here, up until the part about copying missing files. Grub has two parts: one is in the boot sector (MBR, usually), which is what you have now. The other is the grub code, which also includes the menu. This normally is in /boot/grub on your working system. You need to tell it where to look, and this is normally done by running grub-install — Marty Fried, Nov 12 '14 at 05:11

score 1 · Answer 1 · answered Nov 12 '14 at 06:31

enter these commands,

Grub rescue> set boot=(hd0,msdos6)
Grub rescue> set prefix=(hd0,msdos6)/boot/grub
Grub rescue> insmod normal
Grub rescue> normal

this will allow you to login. Once you logged in run the commands in the terminal,

sudo grub-update
sudo grub-install /dev/sda

and you should be done

1 Answers1