> On 1/17/05 10:05 AM, "Gen Hadlow Mac Impact Dbn" <ghadlow at iafrica.com> > wrote: > >> I have a friend who is using a G5 with 2 x 160Gb hard drives. One drive is >> his normal drive and the second is used just for backing up the first drive. >> He used Carbon Copy Cloner to copy the first drive exactly onto the second >> back up drive. Everything seems to be in order and there when he looks at >> his files except that the first drive shows that there is only 9.5 Gb of >> free space left and the second drive has 35.5Gb of free space! >> If one goes to the system profiler it shows that the main drive is formatted >> Journaled HFS+ and the second back up drive is only HFS+ (no Journaled) >> >> Is there any explanation for this? > > First, Journaling takes up more disk space - You'd have to compare two empty > disks when formatted, but there is a substantial difference, especially when > the disk contains a lot of files, such as a startup volume. > > Second, CCC does not copy _everything_. It only copies what is necessary. > Notably, it does not copy virtual memory swap files, which can be a couple > of GB. That's not the main difference, though; I'd recommend reformatting > the second drive to journaled, then compare the size after cloning. > > > Kirk Journaling can be turned on/off without reformatting. Several utilities like Onyx allow this. John -- People say that hard work never killed anybody, but did you ever know anybody who rested to death?