Why is it that I see an
A: drive and a
C: drive but not a
Is there a reason why the disk partitions start at C? And is it possible to change that letter designation?
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The A and B slots are very useful when you want to give a particular removable device the same drive letter each time it's inserted. Windows will never assign A or B to a device, but if you assign A or B to a device using Disk Manager, that drive letter will be assigned on future inserts.
I keep my source control database on a USB key so I can transfer it between multiple machines, and always assign it to B because I know that drive letter will be available on every machine. Finding this trick simplified my life greatly.
I've seen Softgrid (now called Microsoft Application Virtualization (App-V) version 4.5) installs which use the B drive as it's hidden drive... It uses the drive to store the applications to run.
jeah subst isn't a good idea but if you are on XP or older and need to change the drive letter to B: then go to HKEY_LOCAL_MACHINE\SYSTEM\MountedDevices and change \DosDevices\Q: to \DosDevices\B:.
My Windows XP box at the office has no C drive either. There was a bug in the text-mode setup version I installed from that was triggered by having a Zip drive (think 100 MB floppy) installed when running setup, resulting in Windows XP installed on drive E.
I've found it entertaining (and even occasionally handy) to have no C drive. Quite a few application installers have shown "quirks" when faced with no drive C at all.