Article ID: 158155 - View products that this article applies to.
This article was previously published under Q158155
When you start Windows NT and you log on, the following error message may appear:
Error: SAS Window: Winlogon.exe
There is no disk in the drive. Please insert a disk into drive A:
Systems that have bootable CD-ROMs and Award BIOS with a date code prior to September 25, 1996 may experience this problem. The Award BIOSes with release dates prior to September 25, 1996 enable bootable CD-ROM support by using floppy and hard disk emulation. Windows NT 4.0 does not support emulation mode CD-ROM booting.
Disable the bootable CD-ROM functionality of the system BIOS or of the SCSI controller BIOS.
To disable the bootable CD-ROM support of the Award BIOS:
Microsoft has confirmed this to be a problem in Windows NT version 4.0. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.
The third-party products discussed here are manufactured by vendors independent of Microsoft; we make no warranty, implied or otherwise, regarding these products' performance or reliability.