Errors on E450 boot disk

[bigkatt]

Hi,
I have an E450 that is my backup server. It seems that the boot disk is having a problem. The error: /pci@1,4000/scsi@3/sd@0,0 (sd0) corrupt label - wrong magic number.
I think my superblock is corrupt. I think I can use an alternate superblock and reboot the systems as if nothing ever happened. I am looking for some additional input as to what the problem may be.

Thanks,
BK

 

[mikeclark]

You could try booting from CD and running fsck on your boot disk.
There is a good chance this will fix the drive.

 

[FarahRegal]

U could try booting as Single mode ( Boot -s) in command line or Ok prompt.

And run (fsck -b) to give the system alternative superblock.

Fsck walks into file system starting in Superblock and deals allocated disk block, pathnames, directories, free blocks inodes and so on. If the fsck can not fix the problem, it drops the System at Single mode or maintaince mode.



thanks
good luck
F. regal

 

[ianf]

If fsck doesn't sort you out, the bootblock can also be replaced from the installation CD. The process is described in docs.sun.com Ian

"IF" is not a word it's a way of life

 

[bigkatt]

Thanks for your posts. The backup server had a cloned OS disk so I decided to boot up on the second disk and copy over the lable. No help. I tried newfs -N to try to find a second superblock to use. I tried all four. No luck! I ran recover, Legato, and grabbed the last full save of the / partition. The filesystem was restored. I then used the installboot /usr/platform/`uname -i`/lib/fs/ufs/bootblk /dev/rdsk/c0t0d0s0 to install the bootblock back to the original location.

Thanks again,

BK

 

[NavinB]

Hi,
So is the system working fine now....???
and u mean to say that fsck didn't sort out the problem..

 

[bigkatt]

Yes the systems is backup and running without any problems. fsck did not sort out my problems. If it was not for the second boot disk I think I might have had to jumpstart the system. The cost of the second boot disk, in this case, was well worth the $$.

Thanks again.

BK