Hehe, I felt the same on first thought

It's because of this post and the follow ups:
http://www.msfn.org/board/index.php?showto...st&p=801507I also expected drive number to be 1 digit only, but apparently USB card readers may give unforeseen troubles.
If you ask me- I can disable them, even had to borrow a card reader to reproduce the issue, but I am not sure if an end user can do that, i.e. embedded card reader, throwing 8 empty drives (are there such

) + 1 internal drive + 1 USB stick. Some BIOSes don't allow turning off card readers, or opening the case to unplug it seems not much of a resolution.
P.S. 256 seems overkill (nowadays

), but 2 digits doesn't seem that ridiculous.