Grub failing to work
Stephen Liu
satimis at yahoo.com
Sat Jun 17 15:21:36 UTC 2006
Hi Bob,
--- S.W. Bobcat" <swbobcat at hotmail.com> wrote:
> It sounds like GRUB is messed up. Try This:
>
> 1) Take your master CD-DVD for the Distro and boot from it.
> 2) When it comes up Type F5 and then type Linux Rescue
> 3) Hit [Enter] --> Continue --> /mnt/sysimage
> 4) Type chroot /mnt/sysimage
> 5) Type grub-install /dev/sda [in my case -- in your case it may be
> sdb or
> whatever].
>
> That *should* reinstall GRUB, you may then need to go to /boot/grub
> and edit
> by hand [or not] menu.lst.
>
> That *should* fix it... but then again, it might not, but at this
> point it
> does not sound like you have anything to lose by doing a little bit
> of
> hacking. In the worst case you might need to do a re-install of FC5,
> in that
> case do this:
>
> Start the Install process, yada, yada, yada, when it get to the point
> where
> it asks you what type of install you want to do select *custom* -->
> *manual*
> -->then *edit* your partitions. BUT *DO NOT* FORMAT / !!! Yada,
> yada, yada.
> You are now at the package installation: Select *only* the packages
> for your
> GUIs (Kde, GNOME, etc) , sys admin, and sys tools, unmark all other
> packages, start the install. This will overwite your startup files
> including
> GRUB, while preserving the data on / [root] As a word of warning
> when you
> edit the partitions also make sure you *DO NOT* FORMAT /home !! If
> you do
> your toast, unless you have a backup of /home, in which case you
> would have
> to do a restore of /home ( which can be a pain in the @$$, especially
> if you
> backed it up with partimage as I sadly found out on kernels above
> 2.6.10.
> TIP: depending on what you use for your backup, the most reliable is
> to back
> up using the tar command.
>
> But first start by doing a re-install of GRUB, the take the more
> drastic
> action if necessary.
>
> Hope this helps.
>
> http://torrent.linux.duke.edu/
>
>
>
> >Hi folks,
> >
> >FedoraCore5_64
> >
> >Grub on this box did not work ever since running "yum update"
> updating
> >"kernel-2.6.16-1.2133_FC5" a few days ago. On starting the PC only
> >with "GRUB" popup on a black screen without other messages. Typing
> >does not work, keystroke without function. I have to run a boot
> floppy
> >to start the box/PC.
> >
> ># uname -a
> >Linux localhost.localdomain 2.6.16-1.2133_FC5 #1 SMP Tue Jun 6
> 00:51:53
> >EDT 2006 x86_64 x86_64 x86_64 GNU/Linux
> >
> ># rpm -qa kernel
> >kernel-2.6.16-1.2133_FC5
> >kernel-2.6.16-1.2122_FC5
> >
> >The boot floppy was created on this box with
> ># grub
> >grub> root (hda0,0)
> >setup (fd0)
> >
> >
> >I tried to fix the problem with the boot floppy without success.
> Steps
> >performed as follows;
> >
> ># fdisk -l
> >Disk /dev/sda: 80.0 GB, 80026361856 bytes
> >255 heads, 63 sectors/track, 9729 cylinders
> >Units = cylinders of 16065 * 512 = 8225280 bytes
> >
> > Device Boot Start End Blocks Id System
> >/dev/sda1 * 1 13 104391 83 Linux
> >/dev/sda2 14 1734 13823932+ 83 Linux
> >/dev/sda3 1735 3008 10233405 83 Linux
> >/dev/sda4 3009 9729 53986432+ 5 Extended
> >/dev/sda5 3009 3262 2040223+ 82 Linux swap /
> >Solaris
> >
> >HD - SATA interface
> >/boot on /dev/sda1
> >
> >
> >After starting the box/PC with the boot floppy
> >
> >1)
> >On Konsole;
> >
> ># grub
> >Probing devices to guess BIOS drives. This may take a long time.
> >
> > GNU GRUB version 0.97 (640K lower / 3072K upper memory)
> >
> > [ Minimal BASH-like line editing is supported. For the first
> word,
> >TAB
> > lists possible command completions. Anywhere else TAB lists the
> >possible
> > completions of a device/filename.]
> >
> >grub> root (hd0,0)
> >root (hd0,0)
> > Filesystem type is ext2fs, partition type 0x83
> >grub> setup (hd0,0)
> >
> >setup (hd0,0)
> > Checking if "/boot/grub/stage1" exists... no
> > Checking if "/grub/stage1" exists... yes
> > Checking if "/grub/stage2" exists... yes
> > Checking if "/grub/e2fs_stage1_5" exists... yes
> > Running "embed /grub/e2fs_stage1_5 (hd0,0)"... failed (this is not
> >fatal)
> > Running "embed /grub/e2fs_stage1_5 (hd0,0)"... failed (this is not
> >fatal)
> > Running "install /grub/stage1 (hd0,0) /grub/stage2 p
> /grub/grub.conf
> >"... succeeded
> >Done.
> >
> >
> >Exited grub and rebooted the box/PC. Still failed to boot the
> box/PC
> >with only "GRUB" displayed on a black screen, no other messages.
> >Keystroke did not work.
> >
> >
> >2)
> >On Konsole
> >
> ># grub
> >Probing devices to guess BIOS drives. This may take a long time.
> >
> > GNU GRUB version 0.97 (640K lower / 3072K upper memory)
> >
> > [ Minimal BASH-like line editing is supported. For the first
> word,
> >TAB
> > lists possible command completions. Anywhere else TAB lists the
> >possible
> > completions of a device/filename.]
> >
> >grub> root (fd0)
> >root (fd0)
> > Filesystem type unknown, using whole disk
> >
> >grub> setup (hd0,0)
> >setup (hd0,0)
> >Error 17: Cannot mount selected partition
> >
> >Failed. Whether I need to mount the /boot partition (/dev/sda1)
> first
> >before running "grub"? The HD is working. Would it make confusion
> >resulting in re-installing the complete FC5_64.
> >
> >
> >Besides I can't mount the boot floppy, either as root or as user, to
> >copy "grub" from it on /boot
> >
> >$ cat /etc/fstab
> >...
> >....
> >/dev/fd0 /mnt/floppy auto noauto,owner,user,kudzu 0 0
> >
> >However I can mount a floppy with .txt files on it only by running
> >"mount /mnt/floppy"
> >
> >It looks strange to me. Would the boot floppy only contain an
> image.
> >
> >Please advise. TIA
> >
> >B.R.
> >SL
> >
> >--
> >fedora-list mailing list
> >fedora-list at redhat.com
> >To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list
>
>
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