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I feel kind of dumb of asking this...but I was reading about Time Machine and it said that you need to have a hard drive that is at least the size of your start up disk. Is the start up disk the hard drive that the OS is installed on? If so my iMac hard drive is 1TB. So I would need a 1 TB ext. hard drive correct? Thanks for any help.
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Start up disk
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MacosNerd 
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Posted 05 March 2008 - 12:28 PM
Not a dumb question.
Apple Mac's out of the box are configured as a single disk that contains your OS and your home directories. Additionally if you choose to, you can load bootcamp which will non-destructively partition your hard drive to two logical drives. One for windows and one for OSX.
Most people stay with the apple setup of a single drive, as their start up disk and so your internal drive is the startup drive.
Also keep in mind when choosing an external drive that will be used for Time machine, is how much free space you have on your internal drive and also the hourly/daily backups that TM provides. You want a drive that is sufficiently large to hold the initial backup and also the hourly/daily backups.
Apple Mac's out of the box are configured as a single disk that contains your OS and your home directories. Additionally if you choose to, you can load bootcamp which will non-destructively partition your hard drive to two logical drives. One for windows and one for OSX.
Most people stay with the apple setup of a single drive, as their start up disk and so your internal drive is the startup drive.
Also keep in mind when choosing an external drive that will be used for Time machine, is how much free space you have on your internal drive and also the hourly/daily backups that TM provides. You want a drive that is sufficiently large to hold the initial backup and also the hourly/daily backups.
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