Apple Event: May 7th at 7 am PT
I do hear one of the SATA disks in my machine acting up. Strange behavior lately. I've been through this HD failure scenario before...the
Apple hardware test issue confirms an issue...
4hdd/11/40000000:SATA(2,0)
Does this error tell me which disk is potentially failing? Which SATA slot?
Mac Pro
Took out 3 SATA drives. Machine is still taking forever to boot from system disk. Can I take out the system disk and run AHT from the DVD? Or does the "system" disk need to remain for the machine to function off the DVD?
You don't need any disk drive and that goes to "remove all the drives" or that only when it was first shipped (2008+) was there an AHT boot program on the hard drive.
Insert the DVD with AHT instruction on label, instead of using "Command-C" use "-D"
Ahhhh the hardware error is gone after 1 AHT pass. Looking like a system disk reinstall?
https://discussions.apple.com/thread/3096455?start=0&tstart=0 might be of interest to you ...
Everytime I restart the machine it feels the need to tell me that I've successfully installed ram.
That sometimes happens if you have modules that are dropping out due to errors. Check often to see that all is present at the expected sizes.
Replacing the sys HD. Reinstalling everything. Reintegrating parts of the old sys. I' ll be back with an update in a few days??? :(
Thanks guys! :D
Wow...so I repurposed this HD I was using for the new sys drive. However, when trying to reformat the 2 TB SATA drive I get the error, "Volume erase failed with the error: Couldn't unmount disk". I'm booted off another FireWire 400 disc. Is it possible I have 2 HD hardware failures here??? Grrrrrrr...
Couldn't unmount disk".
That is not usually a disk failure. It is usually caused by inadvertantly having something open on the drive you are trying to work on, such as using its copy of Disk Utility.
The new HD in question was reformatted on my Mac Pro. Now however, it won't allow me to install Lion on the disc. When I check it out in Disc Utility it's fine. So I try and reformat and I get the error. However, I took it to another machine and it mounted and reformatted fine. Now I've brought it back to the Mac Pro and it's willing to allow a system install. Should I be concerned about using it as a system disk with the recent disc mount errors?
What I meant to say is that nothing was on the disc when I was getting these errors.
Please help me read this hardware error code?
