Nigel Henry wrote: > On Tuesday 10 October 2006 21:37, Knute Johnson wrote: >>> On Tuesday 10 October 2006 20:41, Knute Johnson wrote: >>>> I have WinXP installed on the first hard drive and FC5 on the second. >>>> I was using grub as the boot loader but it was destroyed when I had >>>> to reload Winblows. I'm sure that I can start FC from a CD and mount >>>> the second drive but how do I reload grub? Any pointers would be >>>> greatly appreciated. >>>> >>>> -- >>>> Knute Johnson >>>> Molon Labe... >>> Put the 1st FC5 disc in. Choose Linux-rescue. You will be presented with >>> harddrive options. Choose the one that has FC5 on it, and you will end up >>> with a command prompt. Type. chroot /mnt/sysimage. Now you can reinstall >>> Grub on the Winblows drive. If Winblows is using hda, type. >>> grub-install /dev/hda . If all goes well, Grub should now be installed in >>> the MBR of the Winblows drive. Reboot, and you should have Grubs menu >>> back. >>> >>> Nigel. >> I'm with you Nigel but how does grub know that the Linux drive is >> hdb? >> >> Thanks, >> >> -- >> Knute Johnson >> Molon Labe... > > Mainly because if you have 2 harddrives, and Windows is on the first one > (hda), Grub is not going to be on that, as it's a linux bootloader. > > Say for instance you only had one harddrive. You have installed Windows first > on the drive, so it is labelled as hda1, and boots up using the windows > bootloader, using ntldr. You now install FC5 on the same drive (presuming > that you have free space on the drive). You create a / partition for FC5, say > this is hda3, and a /home partition hda4. Grub is waiting to be installed > somewhere, and you are given options as to where you want to install it > during the OS install. The default option is the MBR, and if you go for this > Grub will be installed in the MBR of hda (where windows was booting from), > but will add a chainloader entry to /boot/grub/grub.conf , so that you can > not only boot up FC5, but Windows too, as you know. > > If you had to reinstall the Windows OS (a common occurence) , the MBR would be > taken over by the Windows bootloader (ntldr), and now you need to reinstall > Grub on the MBR (the situation you find yourself in). > > You now load the 1st FC5 cdrom, and type linux-rescue. this will give you > options for the harddrive partition you want to work with. You know that > Windows is on hda1 so thats not the correct option, as Grub isn't on that. > The only other option should be hda3, which is the / partition for FC5, and > Grub is set up on that, but not installed to be used as a bootloader at the > moment. > > Back to the linux-rescue disc, choose hda3 as the harddrive partition, which > will get you a command prompt. Type. chroot /mnt/sysimage . this will get you > another command prompt. Now you can put Grub wherever you like, but were > going to put back in the MBR of hda where the reinstall of Windows had > removed it from. So you type. grub-install /dev/hda , and if all goes well > Grub should be reinstalled in the MBR of hda, and when you next reboot you > should get a Grub menu with options for FC5, and "other" which will be > Windows. > > I had a lot of problems with bootloaders initially when working with Linux, > but over time I have become more clued up as how how they work. > > Post back if you still have problems in getting this working again. > > Nigel. > > > > How about giving Super Grub a try. It can be found here: http://adrian15.raulete.net/grub/tiki-index.php Looks like a good answer for all of us that are having problems with windows and Linux dual booting. Peter
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