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Old 12-01-2007, 04:51 PM
"Mikkel L. Ellertson"
 
Default Access external Fedora filesystem

craigni wrote:
> Hi Gurus, I have a dual boot system with Fedora 7 on one drive and Fedora 8 on another. I'd like the Fedora 8 system to access the data on the Fedora 7 system. Fedora 8 sees 7 as sdc.
>
> If I enter:
>
> $ sudo mount -t ext3 /dev/sdc1 /mnt/test
> $ ls /mnt/test
> config-2.6.21-1.3194.fc7 initrd-2.6.21-1.3194.fc7.img System.map-2.6.21-1.3194.fc7 vmlinuz-2.6.22.9-91.fc7
> config-2.6.22.9-91.fc7 initrd-2.6.22.9-91.fc7.img System.map-2.6.22.9-91.fc7
> grub lost+found vmlinuz-2.6.21-1.3194.fc7
>
> but I can't access the data on the filesystem from there. If I enter:
>
> $ sudo umount /mnt/test
> $ sudo mount -t ext3 /dev/sdc2 /mnt/test
>
> I get:
>
> mount: wrong fs type, bad option, bad superblock on /dev/sdc2,
> missing codepage or helper program, or other error
> In some cases useful info is found in syslog - try
> dmesg | tail or so
>
> Is it possible to access the data on the F7 system from booted F8? If so, how?
>
> Many TIA
> Craig
>
>
The problem is probably that sdc2 is an LVM volume, os it is a
little harder to mount. Probably the easiest way is to look at
/etc/fstab on F7, and copy the entry for /, changing / to match the
desired mount point.For example, if fstab has:

/dev/VolGroup00/LogVol00 / ext3 defaults 1 1

you would want to do something like:

mount /dev/VolGroup00/LogVol00 /mnt/test.

The reason you can mount /boot is because it is not an LVM volume,
but is a standard ext2/3 file system. If you do not want to boot F7
to get the information, you should also be able to get it when you
have sc1 mounted by looking at /mnt/test/grub/grub.conf and looking
at the root= line.

Mikkel
--

Do not meddle in the affairs of dragons,
for thou art crunchy and taste good with Ketchup!

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