accidentally created a mirror partition

[kingroach]

i was making Windows PE from longhorn from a guide. According to guide I ran these commands in command line:

Run SUBST W: G:\LHPE
Run CD /D W:\

it created a new partition called W:\ and only contains files from G:\LHPE( longhorn setup folder). Is there any way I can delete this partition. This not an actual partition cz it doesnt showup in Disk manager.

[sleepnmojo]

subst w: /d

Don't worry, it is just an alias.

[utln]

SUBST W: /D