Q: 2009 macpro internal drive failure
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by Grant Bennet-Alder,HelpfulNov 28, 2015 7:07 PM
Grant Bennet-Alder
Nov 28, 2015 7:07 PM
in response to Stanley Sagov
Level 9
(61,083 points)
DesktopsIf it does not perk up with a few passes of Disk Utility (Repair Disk [directory]) it will need to be replaced. Once you have restored the data from your Trusted Backup, you can try security erase, writing zeroes to the old drive**. If it passes, it has 100 percent good blocks again. if it fails, it is a bona fide doorstop.
** there is no need, and it can be damaging to attempt to Zero an SSD. Do this only on a Rotating Magnetic drive.
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Nov 28, 2015 7:13 PMby Stanley Sagov,AActually after many attempts at recovery with disk utility ,disk warrior and tech tool pro and some others I could not find any data on the drive when I could get it to mount .Gave up ,took the wrong internal disk out and turned off the system.On turning it on again the disk mounted and appears to be fine .I am backing it up and am really not sure what fixed the problem
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by Grant Bennet-Alder,Nov 28, 2015 7:53 PM
Grant Bennet-Alder
Nov 28, 2015 7:53 PM
in response to Stanley Sagov
Level 9
(61,083 points)
Desktops
That problem may not stay fixed.
A drive that exhibits unusual behavior may die suddenly.
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Nov 28, 2015 8:00 PMby Stanley Sagov,that is good advice and after backing up I will plan to replace the disc tomorrow.
I am a bit puzzled about how to identify the right disc bay since they seem to be numbered 0,1,2,3,4 on disk utility but when I removed what I thought was the defective disk it was the wrong one (labelled as 1 in disk utility). How do you get the is accurate?
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Nov 29, 2015 1:49 AMby lllaass,The bay location (1-4) of drives in the sleds is specified in System Profiler
OS X: About System Information and System Profiler - Apple Support
under SATA/SATA Express. Click on the drive, not the controller.
