For some reason the new extended mkdir command fails on any drive except C:

/mkdir c:\A

works as expected, but...

/mkdir e:\A

fails with: * /mkdir: unable to create 'E:\A'

Incase this makes a difference C: is the boot drive (duh), D: is an empty dvd-rom drive, & E: is a data drive.

The release v7.45 can create these dirs without any issues.