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napster846

macrumors newbie
Original poster
Sep 2, 2010
4
0
Hi

Im trying to use Time Machine to backup my Mac. But when I click 'select backup disk', it does not list any disk I can backup on. Can someone tell whats wrong?

Thank you.
 
Hi

Im trying to use Time Machine to backup my Mac. But when I click 'select backup disk', it does not list any disk I can backup on. Can someone tell whats wrong?

Thank you.

Silly question: but do you have a backup hard drive connected to your mac? Is it turned on, plugged in properly, etc,
 
yes there is an icon and i can access the files on the hard drive

Did a quick google search...possible solution:


Click the Apple menu, system preferences. Click the "Time Machine" button, click "Change Disk", select the drive you want to us as a time machine backup, it will say "reformat required" probably, click "use for backup", it will say you need to erase it. Click erase, it will do it on it's own, and then it will allow you to use it for backup and it should just show up as a time machine backup on the desktop.

However, this sounds like you would loose files already on this hard drive. unless they are just test files to see if the hd is working, I wouldn't necessarily do this, of course.
 
Did a quick google search...possible solution:


Click the Apple menu, system preferences. Click the "Time Machine" button, click "Change Disk", select the drive you want to us as a time machine backup, it will say "reformat required" probably, click "use for backup", it will say you need to erase it. Click erase, it will do it on it's own, and then it will allow you to use it for backup and it should just show up as a time machine backup on the desktop.

However, this sounds like you would loose files already on this hard drive. unless they are just test files to see if the hd is working, I wouldn't necessarily do this, of course.

Thats my issue, it does not list my drives when i click "change disk"
 
Two things that may be useful, as I just got a Mac and put Time Machine to use:

The external drive I already had would work for Time Machine backup, but the computer informed me it would have to be reformatted. I had been using it with my old Win PC but it still acknowledged it. I decided not to touch it and got another external HD...the set the new one to handle the back ups.

The second thing is I found a program (can't remember the name but a quick search will yield some options) to schedule the backups at different intervals than the "every hour" only option that Time Machine comes with. I do it once a day at 3:00am and it works for me.
 
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