Q: Cannot use Apple Hardware Test
Hi there,
I am using an iMac (27in, mid-2010) at work. It has OS X 10.7.5 on it but I think this is an upgrade because from what I found, those iMac came with Snow Leopard (http://support.apple.com/kb/sp588).
I have been running some intensive code, which, almost systematically, shuts down the iMac. Like if I just pulled the plug from it.
I've been looking at pages on support.apple and I found that one thing to try is the Apple Hardware Test (http://support.apple.com/kb/ht1509). Maybe one of the four 4Gb RAM chip is faulty.
So, I unplug all external devices except keyboard and mouse.
Restard, press "D" ... nothing happens, it's like a standard Restart.
Restard, press "option+D" ... got a window named Apple Server Diagnostics EFI3X111v5 and almost immediatl=ely after a pop-up window that says "Apple Server Diagnostics does not support this machine iMac (27inc, mid2010) (iMac 11,3/ Max-F2238BAE"
Only choice left: Shut down or Restart.
I then find this page: http://support.apple.com/kb/TS4154 which tells me I should update the EFI Firmware to use the Lion Recovery feature.
Great!
I thus go to this page: http://support.apple.com/kb/HT4904
Then select iMac mid2010 and download the EFI update 1.8 (http://support.apple.com/kb/DL1493)
... which refuses to get installed.
When I double click on the pkg file, I get an "Alert - This software is not supported on your system"
By the waym the Boot ROM version of the iMac is already IM112.0057.B01
I also tried something else: boot on the 10.6 DVD, but that shuts down immediately the iMac.
So, questions are: can I use the AHT? if yes, how? if no, what should I do instead to check the iMac memory?
Thanks!
Nicolas
iMac, Mac OS X (10.7.5)
Posted on May 16, 2014 7:38 PM