Wiping free space on an OS X volume

0939084

Cancelled
Original poster
Apr 23, 2005
117
0
Hello, I was just wondering if any of you knew of a program that can wipe the free space on a hard drive (overwriting with zeroes is all that's necessary, even if it's not that secure.)
 

userXMZ

macrumors newbie
Jun 10, 2009
1
0
File slack

Apple's Disk Utility, however, does not seem to wipe file slacks when wiping free space, resulting in an incomplete erase of free space. File slacks is the space after a file's data ends and until the file system block ends, and on a modern harddrive it can constitute gigabytes of data. Forensic investigators frequently find interesting information in file slack.

To wipe free space AND file slack, you need to use Jetico's BCWipe.

For a tutorial, see http://wipeosx.wordpress.com/
 

2012Tony2012

macrumors 6502a
Dec 2, 2012
741
2
Apple's Disk Utility, however, does not seem to wipe file slacks when wiping free space, resulting in an incomplete erase of free space. File slacks is the space after a file's data ends and until the file system block ends, and on a modern harddrive it can constitute gigabytes of data. Forensic investigators frequently find interesting information in file slack.

To wipe free space AND file slack, you need to use Jetico's BCWipe.

For a tutorial, see http://wipeosx.wordpress.com/
Does Jetico's BCWipe work on imac? And is there a free alternative?
 

Mr. Retrofire

macrumors 603
Mar 2, 2010
5,040
451
www.emiliana.cl/en
Apple's Disk Utility, however, does not seem to wipe file slacks when wiping free space, resulting in an incomplete erase of free space. File slacks is the space after a file's data ends and until the file system block ends, and on a modern harddrive it can constitute gigabytes of data. Forensic investigators frequently find interesting information in file slack.[/URL]
AFAIK, this is no problem on HFS+ volumes, because (Mac) OS X writes zeroes in each block before it writes the data in the block. (Mac) OS X does this since Mac OS 8.1 (no, not 10.8.1).