Restoring / partition problem

I would like to ask how I can restore / partition in Linux.
I dump and restore other partition successfully (ext2 and ext3)
I tired with an HP SureStore 40/80GB DLT Drive and Compaq 110/220 GB SDLT
Drive, but the same result as following:

[root@tapetest root]# dump 0uf /dev/st0 /
DUMP: Date of this level 0 dump: Fri Jul 4 10:24:28 2003
DUMP: Dumping /dev/sda5 (/) to /dev/st0
DUMP: Added inode 7 to exclude list (resize inode)
DUMP: Label: /
DUMP: mapping (Pass I) [regular files]
DUMP: mapping (Pass II) [directories]
DUMP: estimated 131489 tape blocks.
DUMP: Volume 1 started with block 1 at: Fri Jul 4 10:25:20 2003
DUMP: dumping (Pass III) [directories]
DUMP: dumping (Pass IV) [regular files]
DUMP: Closing /dev/st0
DUMP: Volume 1 completed at: Fri Jul 4 10:26:26 2003
DUMP: Volume 1 133270 tape blocks (130.15MB)
DUMP: Volume 1 took 0:01:06
DUMP: Volume 1 transfer rate: 2019 kB/s
DUMP: 133270 tape blocks (130.15MB) on 1 volume(s)
DUMP: finished in 53 seconds, throughput 2514 kBytes/sec
DUMP: Date of this level 0 dump: Fri Jul 4 10:24:28 2003
DUMP: Date this dump completed: Fri Jul 4 10:26:26 2003
DUMP: Average transfer rate: 2019 kB/s
DUMP: DUMP IS DONE
[root@tapetest root]# restore if /dev/st0
resync restore, skipped 3388 blocks
resync restore, skipped 3410 blocks
Segmentation fault

Only the root partition have this problem, no problem with other partitions.
And this problem exists in both ext2 and ext3 system.
And during the dump,
sprious 8259A interrupt: IRQ7
was dispalyed in the console

Brgds,
Henry