Internal harddrive size DOUBLED after using SD

[greatbrit]

Originally Posted by dnanian

Well, I don't know what happened, because I don't have any details. Did you back up to an image stored on your startup drive as well as to the backup drive?

Here are the steps I took as per the SD instructions:

1) Formatted my new SimpleTech external (1TB) hard drive to Mac OS Extended (Journaled). (NO partitions on either drive.)
2) In SD, selected "Back up ALL Files" from my internal 750 Gig harddrive on my iMac, to the external drive. (No images or sandboxes created or involved.) A true straightforward "back-up".
3) Got no errors in SD, before or after the back up had completed.
4) External drive seemed to handle the internal's original 256 Gig w/o any problems.
5) HOWEVER, checked the internal's hard drive size after the back-up, and it had ballooned to 540 Gig.

Any help appreciated.

***Another unrelated question: Is it okay to use 2 or even 3 diff. tools to backup a drive, or is that asking for trouble? Your site says SD is compatible with TimeMachine, now that tool doesn't recognize my external drive