[jbleisure]

I remember reading somewhere that I can password protect a disk image and therefore keep sensitive files in there that can't be accessed by anyone without the password. Is that true?


However I don't really understand what a disk image is nor do I know how to create one. An explanation would help.

[Big Mac]

1. A disk image is a virtual disk. It behaves like a disk when it's mounted, but it's contained in a .dmg or .img file instead of a physical object like a CD or hard drive. It's like an ISO on Windows except it's better. It's also the preferred way to package software for downloads.

2. You can create disk images using Disk Utility (/Applications/Utilities/Disk Utility).

3. When you create a new disk image in Disk Utility, you can specify the size you want and whether you want encryption on it.

[jbleisure]

1. A disk image is a virtual disk. It behaves like a disk when it's mounted, but it's contained in a .dmg or .img file instead of a physical object like a CD or hard drive. It's like an ISO on Windows except it's better. It's also the preferred way to package software for downloads.

2. You can create disk images using Disk Utility (/Applications/Utilities/Disk Utility).

3. When you create a new disk image in Disk Utility, you can specify the size you want and whether you want encryption on it.

First off, thanks...now,

1. I kinda got that now, what's virtual about it? I just created a test one and it is sitting on my Desktop. I am familiar with downloading them. Double clicked they usually produce a folder with stuff in right?

2. As I said I have created a test one 40 mb encrypted, however there is nothing in it. How do I put folders or files in it. Do I do that after it is created( on the desktop say)? or create them in/with the disk image ? ( if so how?)

3. Got that. Thanks.

[Big Mac]

Originally Posted by jbleisure 

1. I kinda got that now, what's virtual about it? I just created a test one and it is sitting on my Desktop. I am familiar with downloading them. Double clicked they usually produce a folder with stuff in right?

Right. You double click the .dmg, the disk appears on your desktop (unless you chose not to put the password to the disk in your Keychain - if that's the case, you'll be prompted to enter it), you open the disk and see it contents. When you create a new disk image, it's empty. You treat it like any other disk - you can save and copy files just like a regular hard drive. When you're done, you drag the disk to the trash to unmount it.

2. As I said I have created a test one 40 mb encrypted, however there is nothing in it. How do I put folders or files in it. Do I do that after it is created( on the desktop say)? or create them in/with the disk image ? ( if so how?)

You do it after it's created.

[jbleisure]

Aha... I worked it out - duh!

Thanks for your help.

[Big Mac]

You're welcome.

[jbleisure]

Yes worked ok on G$ PB but now here on my iMac it is not possible and I'm getting this message.

[jbleisure]

Oops that should be G4 PB.

[Big Mac]

I cannot read what the second line of the error says.

[C.A.T.S. CEO]

Originally Posted by Big Mac 

I cannot read what the second line of the error says.

it says 'Resource busy'

jbleisure - is this a .dmg that you created?

[jbleisure]

Yes.