How to overwrite time machine backup

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Level 1

35 points

How to overwrite time machine backup

Hello,

In 2014 I conducted my very first backup on an external hard drive that had 500 GB on my old macbook pro, I used 181 GB. I backed it up as I wanted to transfer everything on my new macbook pro. Today I wanted to backup this laptop just for safety on the same drive but it said i needed more space on my hard drive. I thought it would overwrite the old backup and make a new one but it won't. How could I do that?

My backup disk is a western digital hard drive.

MacBook Pro with Retina display, OS X Yosemite (10.10.3), null

Posted on Jul 6, 2015 3:48 PM

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Answer 1

OGELTHORPE

Level 9

57,305 points

Jul 6, 2015 3:55 PM in response to N_almana

This information may help your situation:

http://pondini.org/TM/4.html

Ciao.

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Answer 2

N_almana Author

Level 1

35 points

Jul 6, 2015 4:25 PM in response to OGELTHORPE

I went to disk utility and clicked erase but it said 'couldn't unmount disk'

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Answer 3

N_almana Author

Level 1

35 points

Jul 6, 2015 4:57 PM in response to N_almana

I needed an answer quick so i ended up just deleting the backup file on the hard disk and emptying my trash and it seemed to work. Hope i didn't destroy anything!

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