Any way to prevent access to TimeMachine folder?

[rockinrocker]

When I got my MBP I upgraded the hard drive myself and began using the stock drive for my TM volume.

I left it intact as a boot volume in case I ever hard to take it in for repairs.

Well, that time has come.

Which brings me to the question in my thread title.

Is there any way I can temporarily lock down the TM folder while the (original) drive is back in my system?

Encrypted disc images can only be so big, right? By now it's gotten to be a pretty huge folder.....

 

[/user/me]

According to , there isn't a limit to size as far as an encrypted disk image is concerned.

http://support.apple.com/kb/HT1578?viewlocale=en_US&locale=en_US

 

[rockinrocker]

Ah, so if I select 'sparse disc image' it will automatically be the right size?
Cause my TM folder is too big for there to be 2 copies on the drive.

 

[rockinrocker]

Ok, so I made the disc image, but when I tried to drag the backup folder into it it won't let me and a dialog comes up that says "The backup can't be copied because the backup volume doesn't have ownership enabled."

What does that even mean?

Is there a better way to go about this?