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Q: iMac 8.1 time machine won't complete backup

i have a 2008 iMac 8.1, 2.4 ghz, 4 gigs ram.  I upgraded to Yosemite and the machine was so slow it essentially wouldn't work at all.  I tried to revert to a pre upgrade version using time machine , it erased the main drive, them the restore quit before installing the startup file.  Now I am screwed and it won't start without an install disk.  I get a message that the machine can't install the OS.  this happens over and over again.  Using the disk utility, the diagnostic says the disk ISPs ok, but doesn't have a startup file, I can't ejecttheinstall. Disk or install a time machine backup. I am caught in a loop that will not allo this machine to work. 

When the reinstall quits, it shows a error log, but I do not know what to look for or what it means.

help!!!!!

iMac, Mac OS X (10.5.8), want to upgrade

Posted on Sep 27, 2015 5:36 AM

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Q: iMac 8.1 time machine won't complete backup

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