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Old 01-11-2010, 09:04 AM   #1
Registered: Dec 2004
Location: Trondheim, Norway
Distribution: kubuntu 10.04
Posts: 308

Rep: Reputation: 31
cannot boot GRUB

I had a total freeze during a kernel upgrade, and reinstalled my system(kubuntu karmic) but still cannot boot.

when I try, I get this sequence of text on my screen:
GRUB loading stage 1.5

GRUB loading, please wait...
Error 15
I know that error 15 means "file not found", but not how to figure out which file it is or how to point correctly to it.

I have tried to install the system on partitions on two separate disks, with the same end result. on the original disk I had some trouble getting through grub install, but on the other disk there were no indications of trouble during setup. can this a problem with the MBR on the first drive?

I have one drive connected by PATA, the rest by SATA, will SATA1 be (hd0)[grub] and /dev/sda [linux], is it the PATA drive, or some other means to determine this without examining the make and model of each drive?

Last edited by edgjerp; 01-11-2010 at 09:07 AM. Reason: added info
Old 01-11-2010, 09:14 AM   #2
Senior Member
Registered: Sep 2005
Location: France
Distribution: LFS
Posts: 1,596

Rep: Reputation: 80
First, please look at your BIOS settings and see which drive is booting first. This will tell you where to install grub. Let's say it's (hd0)
Next, boot using a liveCD, look at /boot/grub/ from the disk that is supposed to boot grub. this will show you where the root is supposed to be. Let's say it's (hd0,0) for example.
Finally, re-install grub like this:
sudo grub
grub> root (hd0,0)
grub> setup (hd0)


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