How can I change the Volume ID of a disk?

http://technet.microsoft.com/en-us/sysinternals/bb897436.aspx

Pay attention to Hexadecimals and
YOU MUST REBOOT

http://technet.microsoft.com/en-us/sysinternals/bb897436.aspx

Pay attention to Hexadecimals and
YOU MUST REBOOT

Hi,

Here is a nice tool to change the drive volume serial number:
Volume Serial Number Editor:
http://www.krylack.com/volume-serial-number-editor/

Just enter a new serial number and restart your PC.

thanks,

for Bob1492, hit start/run; then type CMD to bring up a usable DOS command prompt

I ran the volumeid program from a cmd prompt but the number did not change after I rebooted.
Not the C: drive but an "H" drive --
What could cause this?