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I installed Ubuntu 10.10 and Windows 7 on my hard disk and I had one boot loader for both of them, which is Grub2. I had some problems with my bios and hard disk that Led to my issue with Grub. I installed my previous Linux on the sda5 partition and hence I want to recover its Grub.

And please provide me with some resources on how to recover the Grub 2?

EDIT: i followed the instructions in this site in response to 'suicideducky' answer and i found that this is the device (hd0,4) but when trying setup (hd0,4) it returned Error 12: Invalid device requested

Update: i sucssefuly done what is in the above with site but while the boot time the grub give me and error called Error 17

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migrated from stackoverflow.com Feb 9 '11 at 0:06

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1 Answer

up vote 2 down vote accepted

Boot up an Ubuntu 10.10 Live CD and open a terminal. Then type this:

sudo mkdir /mnt/sda5
sudo mount /dev/sda5 /mnt/sda5
sudo grub-install --root-directory=/mnt/sda5 /dev/sda

(hd0,4) in GRUB 1 corresponds to (hd0,5) in GRUB 2, which Maverick uses, and both correspond to the first logical partition of your first drive, which is /dev/sda5 in normal (non-GRUB) Linux parlance.

(Credit: this forum post)

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Could not find device for /boot: Not found or not a block device. :( –  Wazery Feb 9 '11 at 0:57
    
Sorry, I'm used to chrooting into the partition first, which is a bit more than you probably want to do. I updated and corrected my answer on the assumption you aren't going to do that. –  farfromhome Feb 9 '11 at 0:59
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hmm; I looked up Error 17, and one blogger says that it might be a messed up device order. How that happens I don't know, but I have seen it before. You can perhaps try the advice here: stringofthoughts.wordpress.com/2009/05/24/… . Only the part about fixing the drive order that is; for GRUB still follow the advice above, if it turns out that was indeed the problem. –  farfromhome Feb 9 '11 at 1:23
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Mind giving the output of running sudo fdisk -l from the live CD? –  farfromhome Feb 9 '11 at 1:48
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Glad you were able to find and fix the problem! –  farfromhome Feb 10 '11 at 16:31
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