Diskwarrior directory rebuild and SD! backup

[dnanian]

The 'directory' isn't an entity in itself, Zarkov. It's a structure that HFS+ uses to keep track of where files are kept on the drive. So, there's nothing to 'copy' as such - it's recreated (and maintained) separately on the two drives.

DW is the best disk directory repair tool on the market, bar none. It does a great job of fixing things "inside" the file system (well below what SD! and other applications are dealing with). Some things it fixes aren't relevant any more (it's maintaining disk structures that kind of became obsolete with OS7), so you'll sometimes get false problem diagnostics, but it's invaluable.