PFS3 ... DDH0 ALERT Wrong index block id?? SOLVED!!!

[A4000_Mad]

Hi,

When I switch on my A4000 with 9GB SCSI hard drive it displays a PFS-3 Requester window:-

Device DDH0
ALERT
Wrong index block id



I click on OK and it fully boots then displays another PFS-3 Requester window:-

Device DDH0
Disk update failed



I've tried using pfsdoctor in both Check and Repair modes:-

Initialising
Checking rootblock
Checking rext
Starting pass 1
Checking anodetree
ERROR: block outside reserved area
ABORTED


All looks well inside the Workbench partition DDH0, but I get a report that "Volume is write-protected" if I try to write to it. I have also tried to do a quick format of the partition, but this is not possible as I get the write-protected report again.

Any thoughts on this please?

[rkauer]

 Try to unprotetc the partition first!

[AMC258]

PFS3 is causing the write-protection, because the disk is in a state that further writing would potentially damage existing data.

You cannot format the drive for this reason.  You'll have to repartition, so PFS stops trying to preserve the existing data.  Then you can format.
Maybe change the partition's filesystem to FFS, quick format, then change back to PFS3, and quick format...?

[Thomas]

No need to repartition. Just enter lock ddh0: off and then format drive ddh0: name whatever noicons quick.

However, PFSDoctor should be able to fix the error. If it fails, try diskvalid ddh0: fix.

Bye,
Thomas

[A4000_Mad]

Thanks rkauer :-)

AMC258 wrote:
Maybe change the partition's filesystem to FFS, quick format, then change back to PFS3, and quick format...?

That was a rather clever, cunning plan thanks mate :-)

Thomas wrote:
PFSDoctor should be able to fix the error

Yes, that's what I thought Thomas, as it fixed my only other problem ok. Many thanks for your other suggestions :-)

With my data backed up and nothing to lose, I thought I'd see what the other buttons of pfsdoctor did. First I tried 'Search filesystem'. But this didn't progress and caused the A4000 to reboot after just a few seconds.

Then I tried 'Undo Format'. To my surprise this scanned DDH0 making lots of repairs and renaming it as "FixedDisk".



It also recommended that I backup my data, format the disk and then copy the data back to it. So I did just that and all is well now :-)

Thank you.

:cheers: