Disksalv.......Can it Validate HD's over 4GB?

[zipper]

Disksalv doesn't work with >4GB. Period.
If you desperatedly want to rescue those >4GB partitions, the one and only tool is diskmontools.lha from Aminet. But it's pretty slow, backup+format is much preferred and faster.

[zipper]

With 3.9 FFS I have had no problems with errors; even when a crash has caused an invalid partition, it always has validated itself and with CSPPC SCSI3 it succeeds in 30 seconds - 1.5 mins. I'm using TurboVal, which lets the validate process happen in just one partition at the same time and waits for the process end before continuing. Waitforvalidate was added later to the ROM update.

[zipper]

Piru wrote:
Unfortunately no proper external tool exists that handles >4GB.

Yes, no proper but diskmontools still exists if you are desperate to salvage something >4GB.