Q: Restore eMac to factory settings ?
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Jan 5, 2016 11:24 AMby SteveShapiro,http://support.apple.com/kb/HT4718
To restore the computer to factory settings, follow these steps:
1. Hold Command and R keys while your Mac is starting to start into OS X Recovery, and open Disk Utility.
2. Choose "Macintosh HD" on the sidebar, go to the Erase tab and erase the drive.
3. Close Disk Utility and reinstall OS X. OS X will be downloaded from Apple and installed.
Apart from that, there's also Internet Recovery, available for 2010 and newer Macs. This mode, accessible holding Command, Option (Alt) and R keys while your Mac is starting, downloads Recovery HD from Apple, and it will always reinstall the original OS X version that came with the Mac
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Jan 6, 2016 10:28 AMby BDAqua,If 10.4 you won't have the CMD+r Restore partition to boot to.
Tough without the Install disc, but some things to try...
Does it boot to Single User Mode, CMD+s keys at bootup, if so try...
/sbin/fsck -fy
Repeat until it shows no errors fixed.
(Space between fsck AND -fy important).
http://www.westwind.com/reference/os-x/commandline/single-user.html
Have you blown the dust out lately?
