Redirect Grub or copy new boot
Paul Howarth
paul at city-fan.org
Mon Mar 14 11:27:17 UTC 2005
Mark Sargent wrote:
> Mark Sargent wrote:
>
>> Paul Howarth wrote:
>>
>>> On Sat, 2005-03-12 at 20:24 +0900, Mark Sargent wrote:
>>>
>>>
>>>> Paul Howarth wrote:
>>>>
>>>>
>>>>
>>>>> On Sat, 2005-03-12 at 16:24 +0900, Mark Sargent wrote:
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>> Hi All,
>>>>>>
>>>>>> after not finding any solution for my previous FC2
>>>>>> install(couldn't load X system), I went ahead and did a fresh
>>>>>> install of FC3 on to another partition. I didn't create another
>>>>>> boot partition, as I was thinking I could either redirect grub to
>>>>>> the boot dir for the new install or copy the dir/files onto the
>>>>>> existing boot partition. Which way would you do/have done it..?
>>>>>> Cheers.
>>>>>>
>>>>>> new install = /dev/hda5
>>>>>> boot partition = /dev/hda9
>>>>>> old install = /dev/hda12
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>> I usually install with multiple partitions/logical volumes anyway.
>>>>>
>>>>> I assume that your entire new installation went into /dev/hda5 and you
>>>>> didn't tell the installer to re-use the existing /boot partition
>>>>> in /dev/hda9?
>>>>>
>>>>> You can configure your existing FC2 grub to chain-load the FC3 grub
>>>>> from /dev/hda5, or you could copy the grub.conf kernel entries
>>>>> from your
>>>>
>>>>
>>>>
>>>>
>>>>> FC3 install into your FC2 grub.conf. I would do the former rather than
>>>>> the latter, because the latter would require you to repeat the
>>>>> operation
>>>>> every time you upgraded the FC3 kernel.
>>>>>
>>>>> If you post the output of "fdisk -l /dev/hda" and your FC2 grub.conf
>>>>> file, you might get more specific help.
>>>>>
>>>>> Paul.
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>> Hi All,
>>>>
>>>> here is what was asked for. FC2 grub.conf and fdisk output,
>>>>
>>>> Grub:
>>>> # grub.conf generated by anaconda
>>>> #
>>>> # Note that you do not have to rerun grub after making changes to
>>>> this file
>>>> # NOTICE: You have a /boot partition. This means that
>>>> # all kernel and initrd paths are relative to /boot/, eg.
>>>> # root (hd0,9)
>>>> # kernel /vmlinuz-version ro root=/dev/hda11
>>>> # initrd /initrd-version.img
>>>> #boot=/dev/hda
>>>> default=0
>>>> timeout=10
>>>> splashimage=(hd0,8)/grub/splash.xpm.gz
>>>> password --md5 $1$zVCW8EN2$ZVsfDdJMJGmcxb/qge15k0
>>>> title Fedora Core (2.6.10-1.14_FC2)
>>>> root (hd0,8)
>>>> kernel /vmlinuz-2.6.10-1.14_FC2 ro root=LABEL=/ rhgb quiet
>>>> initrd /initrd-2.6.10-1.14_FC2.img
>>>> title Fedora Core (2.6.10-1.12_FC2)
>>>> root (hd0,8)
>>>> kernel /vmlinuz-2.6.10-1.12_FC2 ro root=LABEL=/ rhgb quiet
>>>> initrd /initrd-2.6.10-1.12_FC2.img
>>>> title Fedora Core (2.6.9-1.11_FC2)
>>>> root (hd0,8)
>>>> kernel /vmlinuz-2.6.9-1.11_FC2 ro root=/dev/hda12 rhgb quiet
>>>> initrd /initrd-2.6.9-1.11_FC2.img
>>>> title Fedora Core (2.6.9-1.6_FC2)
>>>> root (hd0,8)
>>>> kernel /vmlinuz-2.6.9-1.6_FC2 ro root=/dev/hda12 rhgb quiet
>>>> initrd /initrd-2.6.9-1.6_FC2.img
>>>> title Fedora Core (2.6.5-1.358)
>>>> root (hd0,8)
>>>> kernel /vmlinuz-2.6.5-1.358 ro root=/dev/hda12 rhgb quiet
>>>> initrd /initrd-2.6.5-1.358.img
>>>> title Windows
>>>> rootnoverify (hd0,0)
>>>> chainloader +1
>>>>
>>>
>>>
>>>
>>> My, what a lot of kernels you still have!
>>>
>>>
>>>
>>>> FDisk:
>>>> Disk /dev/hda: 45.0 GB, 45020602368 bytes
>>>> 255 heads, 63 sectors/track, 5473 cylinders
>>>> Units = cylinders of 16065 * 512 = 8225280 bytes
>>>>
>>>> Device Boot Start End Blocks Id System
>>>> /dev/hda1 * 1 510 4096543+ b W95 FAT32
>>>> /dev/hda2 511 5473 39865297+ f W95 Ext'd (LBA)
>>>> /dev/hda5 * 511 1020 4096543+ 7 HPFS/NTFS
>>>> /dev/hda6 1021 2138 8980303+ b W95 FAT32
>>>> /dev/hda7 2139 3688 12450343+ 7 HPFS/NTFS
>>>> /dev/hda8 3689 3943 2048256 b W95 FAT32
>>>> /dev/hda9 3944 3956 104391 83 Linux
>>>> /dev/hda10 3957 4086 1044193+ 82 Linux swap
>>>> /dev/hda11 4087 4596 4096543+ b W95 FAT32
>>>> /dev/hda12 4709 5473 6144831 83 Linux
>>>>
>>>> Paul, I also tried to point grub to the partition like below, but,
>>>> it generated errors,
>>>>
>>>> root (hd0,4)
>>>> filesystem type unknown, partition type 0x7
>>>>
>>>> setup (hd0)
>>>> Error 17: Cannot mount selected partition
>>>>
>>>
>>>
>>>
>>> Didn't you install grub in /dev/hda5 during your FC3 install? If so, why
>>> are you trying to reinstall grub?
>>>
>>>
>>>
>>>> Don't un this, as I can mount the partition under the old install
>>>> like so,
>>>>
>>>> mount -t ext3 /dev/hda5 /mnt/hda5
>>>>
>>>> And, I also don' un why it shows as HPFS/NTFS when I formatted as ext3.
>>>>
>>>
>>>
>>>
>>> The partition type entries in the partition table don't have to
>>> accurately represent the filesystems those partitions are formatted
>>> with, but it causes some confusion (e.g. for grub) when they don't. You
>>> can use fdisk ("t" command) to fix the partition types. Did you delete a
>>> 4GB NTFS partition and use the space to install FC3?
>>>
>>> If you installed grub in the root partition (/dev/hda5, not the MBR)
>>> during your FC3 install, you should already have grub installed in
>>> (hd0,4) and the following addition to your FC2 grub.conf should be
>>> sufficient to run it:
>>>
>>> title Fedora Core 3
>>> rootnoverify (hd0,4)
>>> chainloader +1
>>>
>>> Paul.
>>>
>>>
>> Hi All,
>>
>> Paul, I got the following at boot,
>>
>> Error 13: Invalid or unsupported executable format
>>
>> I also made the change with the t command in fdisk, and made the ID =
>> 83. I definitely have a /boot dir on hd4. Cheers.
So you probably did not install grub on /dev/hda5 when you did the FC3
installation.
> below is the output of the boot dir on hda5,
>
> total 2.6M
> drwxr-xr-x 3 root root 4.0K Mar 12 21:45 .
> drwxr-xr-x 23 root root 4.0K Mar 7 23:19 ..
> -rw-r--r-- 1 root root 0 Mar 12 21:45 bootdiroutput
> -rw-r--r-- 1 root root 50K Nov 3 04:53 config-2.6.9-1.667
> drwxr-xr-x 2 root root 4.0K Mar 7 23:20 grub
> -rw-r--r-- 1 root root 384K Mar 7 22:58 initrd-2.6.9-1.667.img
> -rw-r--r-- 1 root root 698K Nov 3 04:53 System.map-2.6.9-1.667
> -rw-r--r-- 1 root root 1.4M Nov 3 04:53 vmlinuz-2.6.9-1.667
>
> Cheers.
>
> P.S. bootdiroutput is the file created that contains this output.(if
> that makes any sense).
Try booting from the FC3 rescue CD, get to the command prompt, and do:
# chroot /mnt/sysimage
# grub-install /dev/hda5
# reboot
See how that goes.
Paul.
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