Tru64 vdump recover: how to recreate bootstrap?

[Chalaneru]

Hi all,

we have a Tru64 5.1A server which booted directly from SAN, Hp MA800.

We don't know why, some of the LUNs presented to this server began to issue AdvFS I/O errors.

Finally we decided to restore from backup, fortunately we have vdumps available.

We fresh installed 5.1A in a new LUN and then restored those vdumps into another LUN (IDENTIFIER=7). We can correctly access recovered data.

One last step still missing, how to re-create bootstrap structure so now we can boot from the recovered boot domain?

We used:

root@server:/# disklabel -r dsk8 > DSK8_TEMP
root@server:/# disklabel -Rr -t advfs dsk8 DSK8_TEMP HSG80

But when we try to boot single into this disk, it does not give prompt:

P00>>>boot dgb7.1001.0.9.0 -fl s
(boot dgb7.1001.0.9.0 -flags s)
block 0 of dgb7.1001.0.9.0 is a valid boot block
reading 19 blocks from dgb7.1001.0.9.0
bootstrap code read in
base = 200000, image_start = 0, image_bytes = 2600(9728)
initializing HWRPB at 2000
initializing page table at 3ff52000
initializing machine state
setting affinity to the primary CPU
jumping to bootstrap code

...

attemps to load ATM, then dump.

Is there anything we should take care of to avoid this problem?

Thanks for your help.