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Old 02-04-2005, 01:23 PM   #1
cristip
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Registered: Feb 2005
Distribution: Debian - Sarge
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PQMagic8 destroyed linux partitions. Unable to mount root fs


I had a good working Debian - Sarge on my IBM laptop and the partitions were hda1 for the WinXP , then hda3 <type ext3> for /boot a swap ant 2 other linux partitions (the problem is that I don't quite remember exact the other hda's) . I tried to split the Win partition in two and now I get the error
"Kernel panic: VFS: Unable to mount root fs on unknown-block(3,7)"

I think this can be resolved modifying the groub/menu.list from hda3 and /etc/fstab to say that now my / root partition is no longer the old one (I belive now it is hda6) But, I boot with a cd-boot and go in rc1 mod until the partitioning menu where I see my current partitions:

#1 9,2G ntfs
#5 5,6G ntfs
#3 54,2M ext3
#2 4,2G primary fat32 (I think this is the one where IBM keeps it's installation stuff)
#6 9,8G
#7 9,8G

this last two don't have a file type associated

and in rc2 mode i can mount hda3 with the /boot and change the groub/menu.list

but when I try to mount hda6 (witch I think is the one / I get a Invalid argument error) I think it is because it don't know what type it has. so I can't change the /etc/fstab .

And now I hang in a
"Kernel panic: VFS: Unable to mount root fs on unknown-block(3,7)"

even if I put in the goub/menu/list either
- /vmlinuz-2.4.27-1-386 root=/dev/hda6 ro
or
- /vmlinuz-2.4.27-1-386 root=/dev/hda7 ro

It is the same.

I try to start Partition Magic again but it won't because it has a errot, so I start PartitionInfo witch gives me the informations about partitions.

and in the error column at the 2 linux partitions (not the /boot) the ones that are after (phisicaly) the win partitions have 1 error each witch are:

"Warning #113: Logical starting at 28970108 overlaps enclosing extended volume"

I don't understand this error.

But, what I found out is that the file type is Linux etx2 for both.
And the /boot witch I could mound is Linux ext3


Can anyone help please
 
Old 02-04-2005, 02:58 PM   #2
TigerOC
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Registered: Jan 2003
Location: Devon, UK
Distribution: Debian Etc/kernel 2.6.18-4K7
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Sounds like the disk geometry is screwed. If you have a Knoppix cd it may be worth while using cfdisk to examine the partitions. It does not sound good though.
 
Old 02-04-2005, 09:22 PM   #3
jschiwal
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Registered: Aug 2001
Location: Fargo, ND
Distribution: SuSE AMD64
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Go into the command mode of grub and use auto-completion to determine which partition is which. For example, enter: kernel (hd0,
Press TAB and select the partition that you think is the boot parition. Do the same for initrd, and root. Then type in the command 'boot' to boot into linux. You will need to re-install the boot loader once you have linux running again of course.
 
  


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