Knowledge Base

Drive A Present Even Though it Is Not Physically Connected

Article ID: 205942

Article Last Modified on 1/23/2007


APPLIES TO


This article was previously published under Q205942

SYMPTOMS

When you view Windows Explorer, My Computer, or Device Manager, you may see drive A, even though there may not be a physical drive A connected to your computer.

CAUSE

This behavior can occur when the Io.sys file is executed when you start your computer.

STATUS

This behavior is by design.

MORE INFORMATION

MS-DOS assigns drive A as a bootable drive and to prevent other storage devices from using this drive letter designation. This behavior is consistent with all previous versions of MS-DOS.

Keywords: kbdiskmemory kbhardware kbprb kbui KB205942