Currently Being ModeratedNov 25, 2012 2:31 AM (in response to WillemIII)
There are some reasons why attempting to install Snow Leopard can fail.
Suitability of your computer.
Valid installation DVD.
Hardware known to perform satisfactorily.
1. Is you iMac able to run Mac OS 10.6?
General requirements for 10.6 Snow Leopard
• Mac computer with an Intel processor
• 1GB of memory (though I'd recommend 2GB)
• 5GB of available disk space for the installation process.
• DVD drive for installation
2. Are you using the retail 10.6 DVD that looks like this? (A Grey disk will likely not work as they are hardware specfic.)
3. Does your optical drive play DVD's normally without any problem? If you think the drive is old and a bit dodgy, try using an external optical drive if you have access to one.
Currently Being ModeratedNov 25, 2012 12:01 PM (in response to roam)
My Mac is able to run OS 10.6, I bought the software in the Apple store and my optical drive plays dvd's without any problems. I checked the memory, the harddisk, anything!
I've boot the Mac with the OS dvd and after a few minuts the installation stops because of another failure that it isn't possible to install some files.
Currently Being ModeratedNov 27, 2012 7:22 AM (in response to roam)
I have consulted Apple technical support the helpdesk. After checking almost everything three was only one conclusion: the cd/dvd with the operating system snow Leopard is defect.
Currently Being ModeratedNov 27, 2012 12:49 PM (in response to WillemIII)
Thanks for posting back, Willemill. Do you know that external optical drives (CD\DVD units) that plug in to a computer are inexpensive and reliable? Also the best thing is, there is no need to disassemble your iMac to replace the one you have. Just leave the old one inside and use the external one.