Can you change the password on a .dmg?

[emw]

So I've created a password protected .dmg file. Fanastic. Can I now change the password, or do I have to create an entirely new image with a different password and copy my stuff over?

I like to occasionally update my passwords, but can't see any way to do this on a .dmg. Am I missing something?

Thanks!

 

[mikeyredk]

if you store it in keychain you might be able to change it in there, but unknown to me

 

[Mitthrawnuruodo]

Cannot find any such choices in Disk Utility, so I'm afraid you'll have to make a new encrypted image, with the new password, then transfer the files and delete the old image... not to much of a hassle, but a change password would be nicer...

 

[LimitedEdition]

The password is not just for entry in to the disk - it is used to encrypt each and every byte of the data on it. That's why it's not so easy to change.

They could still have a change password function, but for big DMGs it would be really slow and users would think something was wrong and make silly support calls which is why they probably left it out.

 

[emw]

Pretty much what I thought. Thanks everybody - just wanted to make sure I wasn't missing anything.