Il giorno 7-05-2011 5:54, admin ha scritto:

> WD ATA drive won't mount on desktop
I just had a WD 250GB drive intermittently failing...
it began making a "TAK" sound at startup, sometimes not mounting (so no
boot, Mac showing flashing folder icon), sometimes booting and working ok.

When the "TAK" sound became more frequent, I got scared and copied
everything to another drive. A subsequent check showed a damaged (and
unrecoverable) partition, so yes, the drive was failing.
Lucky me, I had enough time to backup.

Even if your drive is failing (and it seems it is), trying several times
could perhaps give you a "one time lucky shot", when you can recover
something (unless there's something broken in hardware).

> Disk Utility and Data Rescue
> (DEMO) can't recognize.  DiskWarrior can recognize but chokes on re-
> build attempt.  
Funny thing... if Disk Utility can't recognize (see) the drive, no other
program should.

Did you check if the drive is seen in System Profiler?
Have you tried Drive Genius? It seems quite powerful.

> Have in external Firewire/USB 2 case with Single/Master pinning.
Having it connected internally is usually better for testing/recovering.
When using an external case, go for FW and avoid USB (slower, less reliable)

Did you try recovering it while connected internally?

> Cable select make  any difference?
Don't think so. And the only time I used Cable Select (in a G4), I got hard
disk troubles, so I'd avoid it.

> Surprisingly,  
> perhaps, the only program I have success with in grabbing a drive that
> no other could was the old Norton Disk Doctor under SystemWorks.
I agree. Sometimes Norton (under OS9) did wonder.
Can you still boot in OS9 to try it?

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