If, for some reason your linux computer won't boot, it could be because the bootloader has gotten correupted. If you are using GRUB, a few things could have gone wrong, but I will describe how to do a complete re-install of grub, and then set up the boot menu again. The system I was working on was Ubuntu 6.10.<\/p>\n
First, you will need an emergency rescue CD. I recommend the systemrescuecd <\/a> because at 115MB it is relatively quick to install, but has all of the tools you'll need. Burn the CD, and then boot your computer off of it.<\/p>\n On my system, \/dev\/hda1 (a.k.a hd0,0<\/strong> to grub) had a windows partition, \/dev\/hda2 had a linux swap partition, and \/dev\/hda3 (a.k.a. hd0,2<\/strong> to grub) had the linux partition.<\/p>\n You can run the grub shell off of the rescue cd by simply typing: grub<\/strong><\/p>\n It will probe your hardware and then give you a prompt. In my case, I knew that a full version of grub was already installed in \/boot\/grub\/ on \/dev\/hda3, but to find where it is installed on your computer you can run the command: find \/boot\/grub\/stage1<\/strong><\/p>\n Now that you know where it is, tell grub to use that partition as your "root": root (hd0,2)<\/strong> Then, to install the grub stage1 and 2 files, type: setup (hd0)<\/strong> This will get the grub stage 1 and 2 installed on your disk, making it bootable.<\/p>\n Now, take out the rescue CD, and reboot your computer. If you did everything correctly, it will boot up to a GRUB prompt. You can use this grub prompt to manually boot into your linux partition. First, you will need to find your kernal and initrd image. On my Ubuntu disk, \/vmlinuz and \/initrd.img are links to the correct files, so the command: find \/vmlinuz<\/strong> returns (hd0,2).<\/p>\n To specify the kernel and initrd, use the following commands:<\/p>\n kernel \/vmlinuz root=\/dev\/hda3<\/strong> Now you can boot your system by typing:boot<\/strong> If, for some reason your linux computer won't boot, it could be because the bootloader has gotten correupted. If you are using GRUB, a few things could have gone wrong, but I will describe how to do a complete re-install … Continue reading
NOTE: I used (hd0,2) your parition may be different, see the find command above!<\/em><\/p>\n
Note: I used hd0 which is the same as \/dev\/hda, if you have multiple disks you may need to use hd1 etc…<\/em><\/p>\n
initrd \/initrd.img<\/strong>
NOTE: If your root is not \/dev\/hda3, you will need to replace that with the apprpriate drive\/parition.<\/em><\/p>\n
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