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[Xen-users] messed up partition table on img file

I have a domU that uses a disk img but it won't boot. The partition
table seems to be messed up. 

If I do:
# /sbin/fdisk -ul disk0
You must set cylinders.
You can do this from the extra functions menu.

Disk disk0: 0 MB, 0 bytes
255 heads, 63 sectors/track, 0 cylinders, total 0 sectors
Units = sectors of 1 * 512 = 512 bytes

 Device Boot      Start         End      Blocks   Id  System
disk0p1              63     1574369      787153+  82  Linux swap / Solaris
disk0p2         1574370    83875364    41150497+  83  Linux
Partition 2 has different physical/logical endings:
     phys=(1023, 254, 63) logical=(5220, 254, 63)

I can mount the partition like this:
mount -o loop,offset=806077440 -t ext3 disk0 tmp

Ideally I'd like to fix the img so it can boot. Otherwise, I could
rebuild it now that I know I can actually get at the data. 

Any suggestions on fixing the img file?


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