ntbackup skipping files (Windows backup)

[graemenz]

Hi

Using WinXP pro with all updates.

I'm using ntbackup to try and back up C drive to an external hard drive. For some reason, of the 314 objects in windows\system32\drivers, only about 50 are being included in the backup. I have volume shadow copy enabled. Any idea what could cause this?

(Some of the files are compressed because my C drive is getting full.)

TIA.