NTBackup broken after installing SP2

[Ummagumma]

OS XP Home, with SP2

After installing SP2, NTBackup complained that the
Removable Storage service must be started, which it had
never done prior to installing SP2. (I backup to c:\tmp,
then write the file to CD).

Then NTBackup seemed to be proceeding normally, but
ultimately failed with the report:

==========================================================
Backup Status
Operation: Backup
Active backup destination: File
Media name: "2004.08.31.bkf created 8/31/2004 at 9:29 PM"


Error returned while snapping the volume:Catastrophic
failure


Aborting Backup.

 

[Ummagumma]

Problem solved. Turns out I had Volume Snapshot service
set to manual.

QUESTIONS:
(1) I thought setting to manual meant that the service
would be started whenever needed by applications such as
NTBackup...guess I was wrong?
(2) Any thoughts as to why NTBackup suddenly requires a
running Removable Storage service when I'm simply backing
up to c: ?