Windows 2000 NTBackup.exe Problems

[Gary]

When I run the following script, ntbackup STILL asks me if
I want to overwrite the backup media. How can I get
ntbackup to run completly un-attended.
"
@echo
C:\WINNT\system32\NTBACKUP.EXE
backup "@C:\Backup\backup.bks" /d "Daily" /v:no /r:no /rs:n
o /hcn /m normal /j "Daily" /l:s /P "4mm DDS" /UM"

Thanks
Gary

 

[Pegasus \(MVP\)]

When I run the following script, ntbackup STILL asks me if
I want to overwrite the backup media. How can I get
ntbackup to run completly un-attended.
"
@echo
C:\WINNT\system32\NTBACKUP.EXE
backup "@C:\Backup\backup.bks" /d "Daily" /v:no /r:no /rs:n
o /hcn /m normal /j "Daily" /l:s /P "4mm DDS" /UM"

Thanks
Gary

What's the purpose of the double-quote after /UM?