Time machine backups and clean installs

[Thaenor]

Hello,

really quick question. I did a clean install of Yosy (Yosemite) and I had an HDD configured to be the time machine with my previous OS X.

Can I have Yosy recognise the old backups? How do I configure time machine to do so?

Thanks a bunch.

 

[Gregg2]

Don't know, but why would you want to? As soon as you make a brand new full backup, everything is there. Subsequent backups save anything you've changed, so you're always covered.

 

[robgendreau]

You can search around to find the Terminal commands to reattach your new drive to the old TM backup. But as noted above you can still access your old backups. A consequence of erasing your drive is that from that TM backup's point of view you deleted everything, so it will behave accordingly. You might want to start a new one, since I assume there was a reason for erasing your hard drive. It might even be faster to do a complete new backup than the traversal required for the new one.