Currently Being ModeratedNov 23, 2012 5:06 PM (in response to EricDavid)
Could you be a bit more specific please: updates are free; upgrades (Snow Leopard to Lion or Mountain Lion for instance) need to be purchased.
So, which OS version are you on now?
How did you get it?
And what was the OS version before you upgraded?
Currently Being ModeratedNov 23, 2012 5:36 PM (in response to babowa)
Thanks for your response. I upgraded to Lion (I believe) from the original OS that came Pre-installed when I purchased the iMac in Jan. 2010. I had to have my had drive replaced this week and was told I could re-install all previously purchased updates using iTunes, but I can't seem to find the OS update that I'd previously bought. Right now the iMac is running on OS X, and my iPhoto app is not working at all.
Currently Being ModeratedNov 23, 2012 5:45 PM (in response to EricDavid)
Please go to the Apple (upper left corner) and click on About this Mac. In the resulting window, click on the numbers underneath until they display the OS version.
Snow Leopard, Lion, and Mountain Lion are all OS X - they are 10.6, 10.7, and 10.8 respectively. After you get the OS version, click until you get the "Build" number and post that as well.
If your Mac is from 2010, it most likely came with Snow Leopard. If you purchased Lion, then you should be able to see it under your Purchases in the App Store (not iTunes). But, first, we need to figure out what was installed on your machine after the hard drive replacement.
Not sure about iPhoto at this point - may have to do with whaever OS version is installed. Check in Applications folder in column view and post back which version of iPhoto you have installed.
Currently Being ModeratedNov 23, 2012 6:18 PM (in response to babowa)
OK, first of all thank you. This has been very helpful. The iMac is currently running OS version 10.7.5. After your suggestion to check for purchases in the App Store (not iTunes), I found that I had previusly purchased OS X Lion in 2011. When I clicked to download it, though, I got a message that the computer was already running 10.7 and was I sure I wanted to download it. I did not click to download it, because I think somehow it was already installed, even though I'd been lead to believe that I'd have to reinstall it onto the new hard drive. As for iPhoto, that miraculously seems to have corrected itself and is now working fine. No clue what happened there. Only that it's working and that all the photos I had saved on an external drive and restored using Time Machine are now back up and running. So, I think I'm good. Again, thank you for your interest and insight. And best wishes for the holiday.
Currently Being ModeratedNov 23, 2012 7:37 PM (in response to EricDavid)
Just for clarification, if you are running 10.7.5, then you are running Lion (and the latest version of it). So, yes, you can download it again if you wish to reinstall (you may need it if you encounter a problem that can only be fixed with a new install) - apparently, the repair place reinstalled it for you. If you have all your backed up files back and everything seems to be working, you should be good to go.