> -----Ursprüngliche Nachricht----- > Von: Knute Johnson [mailto:knute@xxxxxxxxxxx] > Gesendet: Mittwoch, 11. Oktober 2006 01:24 > An: Fedora-list@xxxxxxxxxx > Betreff: Re: Reinstalling grub? > > >> I'm with you Nigel but how does grub know that the Linux drive is > >> hdb? > >> > >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. > > Well, the good news is I'm back. The bad news is, it didn't work. > Here is what I did: > > Booted from FC5 CD #1 > > linux rescue > chroot /mnt/sysimage > /sbin/grub-install /dev/sda > /dev/sdb1 does not have any corresponding BIOS drive > > So what does that mean? > > Thanks, > > -- > Knute Johnson > Molon Labe... > > Hello Knute, mount your boot partition in your chroot environment, then run grub-install again. If that doesn't work try grub-install --recheck /dev/sda best regards Frank Jahn (Netzwerkadministrator, RHCE, MCSA+M, MCSE) Metzloser Straße 36 D-36355 Grebenhain Tel.: 0049 (0) 6644 87242 Fax : 0049 (0) 6644 87 6242 E-Mail: mailto:frank.jahn@xxxxxxxxx Homepage: http://www.robbe.com
