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HT1427: Mac Basics: Time Machine backs up your Mac

Learn about Mac Basics: Time Machine backs up your Mac

HT1427 Time Machine backup disk not found

566 Views 3 Replies Latest reply: Nov 11, 2012 12:25 PM by assegaiguy RSS
assegaiguy Level 1 Level 1 (0 points)
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Nov 11, 2012 6:38 AM

I recently reconfigured my external disks, creating a 500GB oartition for Time Machine backup. thefirst time I set up Time machine to use that partition all went well. Seconed time it failed "cannot find backup disk." 


This is a 24 inch, mid 2007 iMac OS X 10.8.2.  I am using two external backup drives - 1T LaCie with 4 partitions and a BlackX removable adaptor with a WD 1T drive plugged in.  Both are formatted Mac OS Extended (Journaled)  In the view below the top "Time Machine" drive at the top is a duplicate of the last drive in the list.


If I select the top drive - I have the option to "Remove Disk" - NOT to "Use this Disk." So I have to select the bottom "Time Machine" drive.  The backup will then run once but on the second try I get "Time Machine couldn't complete the backup to "Time Machine". Unable to complete backup. An error occured while creating backup folder."  Whether I remove the top listed disk or not doesn't seem to matter, sometimes it finds the drive, sometimes not!


The BlackX is a USB connected directly to the iMac.  The other partition on that drive contains movie clips and they run fine.


There is a backup folder on the Time Machine drive with six backups - however I have to "reset" the Time Machine each time to get it to backup.  It craps out on the second try every time.  Got me buffaloed!  Any ideas?



iMac, OS X Mountain Lion (10.8.2), iMac 24-inch Mid 2007, 2.4 GHz Inte


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