> On Mar 6, 2016, at 2:13 PM, Mark Sokolovsky <[email protected]> wrote:
> 
> I've noticed this to be an issue with my 2008 iMac 24". The original 750 GB 
> HDD was greyed out by Disk utility, and wasn't even remotely capable of being 
> formatted, citing a "unable to mount disk" issue everytime.
> 
> I went the hard way and disassembled the entire machine, replacing the HDD 
> with another one, though, I feel there are other possible solutions. 

I doubt it, that’s a common failure mode I’ve seen with HDD’s, and I wouldn’t 
rule out that as the OP’s issue.

It wouldn’t be the first time I’ve gotten a bad HDD out of the box. One of our 
PC suppliers got a bad lot one time and I got two DOAs in a row on a single 
warrantee repair; that was a lotta pain sitting on the telephone having them 
walk me through stuff I know perfectly well before they believed me.

“Yes I have replaced hard drives before. 
Yes I observed static safety precautions. 
Yes, I tried swapping cables and SATA ports on the logic board. 
I swapped in a spare, much smaller drive we have and it worked perfectly so I 
know it’s not the logic board, cabling or operator error.”

That particular vendor was out of business within a few months, so lord knows 
what shady gray market source they had for their HDD’s.

-- 
Bruce Johnson
University of Arizona
College of Pharmacy
Information Technology Group

Institutions do not have opinions, merely customs

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