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Re: reading older disks



steve%prd.co.uk@localhost writes:

> I have a venerable old machine that has never progressed beyond release 4.0,
> and has been little used in the past two or three years.   I set about
> copying everything from its disks onto a portable drive, but the
> process failed part way through, and now the machine will not boot.
> Three long beeps suggest to me that there is a memory failure.
>
> So I tried putting the disks in a caddy to read them that way, but
> although the machine I am using to read them (amd64-7.0) recognises
> the caddy as a SCSI device, I get:

> Aug 21 16:01:49 myservcer /netbsd: sd2(umass2:0:0:0):  Check Condition
> on CDB: 0x00 00 00 00 00 00
> Aug 21 16:01:49 myservcer /netbsd:    SENSE KEY:  Not Ready
> Aug 21 16:01:49 myservcer /netbsd:     ASC/ASCQ:  Medium Not Present
>
> I have used this caddy to read other disks successfully; the disks
> spin up, but attempts to read the label or mount them result in
> "operation not supported by device" messages, e.g.
>
> # disklabel sd2
> disklabel: ioctl DIOCGDINFO: Operation not supported by device
>
> I have wondered about jumpers on the drives, or some kind of format
> incompatibility.   I can hunt around for another antique machine to
> try them in, but I would welcome any wisdom you may care to offer.

My guess is that the disk has failed.
But, I have seen situations where some USB/IDE adaptors work, and some
don't.

So I would indeed recommend trying another old machine.

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