Chosen Solution
It is a long time ago, but I have a similar problem. My iMac shows a blue folder with the finder logo alternated by a question mark. I’ve tried to put in disks to boot from, but no matter what I do, it keeps spitting them out and coming back to the blue folder. What should I do? Thank you.
Your hard drive cannot find an appropriate OS. Let’s start here: go to this kink and identify exactly which machine you have: https://everymac.com/ultimate-mac-lookup… UPDATE I believe this is your machine: https://everymac.com/systems/apple/imac/… Pre-Installed MacOS: 8.6 Maximum MacOS: X 10.4.11 Do you have original installation disks? Do you have retail system version disks? Are your disks machine specific grey disks? UPDATE 5/29/18 If you do not have the system software. you can find it on eBay by searching for Apple Mac OS X 10.4 Tiger - Full Version for Mac Here’s one https://www.ebay.com/itm/Apple-Mac-OS-X-…