Microsoft KB Archive/58950
B-Drive Indicator in Drive/Directory Boxes in Excel for OS/2 PSS ID Number: Q58950 Article last modified on 06-23-1993 PSS database name: W_eXceL
In drive/directory boxes used in dialog boxes (for example, the File Open dialog box), the B-drive indicator [-B-] will be displayed on systems with no B drive. Selecting this indicator will cause no problems, however; Excel will try to access the drive, fail, then return to the previous drive and directory.
Copyright Microsoft Corporation 1993.