Currently Being ModeratedOct 11, 2012 5:02 PM (in response to seventy one)
It's on the original Tiger Install Disc 1 that came with your iMac.
see "Additional Information" at > Intel-based Macs: Using Apple Hardware TestiMac, Mac Mini, iPad, iPods, Mac OS X (10.6.8), (10.8.2), Safari, iTunes, iPhoto
Currently Being ModeratedOct 11, 2012 5:07 PM (in response to seventy one)
It is on whatever disc has the words "Apple Hardware Test" or "AHT Version xxx" printed on it.
If it's not printed on the disc, AHT is not on it.
For RAM testing you can also use the app called Rember: http://www.kelleycomputing.net/Rember/
It allegedly performs more stringent memory tests than AHT.
Big 'Thank you', den.thed (And John Galt too)
A quick scan through the link you gave suggests it's okay. What prompted the question also was why the Tiger system does not seem to show up as a system ... and yet they supplied the disk. Then leopard, while the later disk. has no reference to AHT at all. The Tiger No 1 disk does have AHT on it.
Currently Being ModeratedOct 12, 2012 2:49 AM (in response to seventy one)
I think all original Mac software includes an AHT whether included on the grey disks or as a separate CD. Retail upgrade disks do not come with the Apple hardware test software. Also they don't come with iLife applications (iPhoto iMovie etc), either so make sure you keep a copy of those applications before you upgrade.
As ever, big thank you, Roam
Tell me, I have loaded the memory and it appears to be working fine. Activity monitor and About this Mac both register as 6 GB of RAM. So is it absolutely necessary to run the AHT now or should I consider it something to do if it begins to show signs of a problem? Indeed should I do anything more?
Currently Being ModeratedOct 12, 2012 3:08 AM (in response to seventy one)
I don't think it is necessary to run it unless you are experiencing hardware problems. I don't think there is anymore to do. It is certainly good to see the RAM installed successfully, and showing in Activity monitor.
I upgraded RAM on my iMac recently and was surprised at how tight the fit is.
Currently Being ModeratedOct 12, 2012 3:28 AM (in response to seventy one)
I bought this four years ago, new. It came with 1GB and I requested a second 1GB which has worked fine. Recently I doubled it to 2 + 2, more for a hobby thing to do as it was not having memory problems.
If you are intending to get MLion, I think it will appreciate the new 6GB you have upgraded to on your machine.
Al the best.
roam wrote: I upgraded RAM on my iMac recently and was surprised at how tight the fit is.
Yeah, my thumbs were sore for hours after. Took four or five tries before I got up sufficient courage to use a sledgehammer push hard enough. Just wouldn't seat until I really leaned on it. I can't imagine how I'll ever get them out if I ever have to. They're supposed to come out by pulling on flimsy tabs, which I think will break right away. This is on a late '09 21.5.
WZZZ wrote: 'They're supposed to come out by pulling on flimsy tabs'
I actually had remarkably little trouble. I found the tabs easy to manipulate and the previous memory came out more or less straight away. You have to put the replacement memory in with some care but a firm even push does the job. If I had a problem at all it was with the cheap screws they use which shred so easily. I did panic a little when it looked like I wouldn't get the cover plate off because the screw head was in such poor shape. Incidentally I was asking around for a replacement screw ... you wouldn't believe the trouble I met with identifying it and even then no-one wanted to know.
Currently Being ModeratedOct 12, 2012 5:47 PM (in response to seventy one)
Sorry I could respond back last night or earlier today. I am glad to see that you were in good hands with Roam, John G and WZZZ.iMac, Mac Mini, iPad, iPods, Mac OS X (10.6.8), (10.8.2), Safari, iTunes, iPhoto