This is an annoyance more than a roadblock, but it doesn't seem to make sense.
On my XP box, I got used to subst or mapping drive A: to my general notes and work in progress folders, and drive B: was my current project's source code that I was working on. As these are historical drives that don't get used by a hardware device anymore, I felt safe using them.
Now on Win7 - I can subst or map either drive and use them at the command, but the Windows GUI does not seem to display B: as a drive. though I can navigate to it in the address bar.
What's up with this?