SuperStor Changes RAMDrive Letter (81817)

The information in this article applies to:
    Microsoft MS-DOS operating system 5.0
    Microsoft MS-DOS operating system 5.0a

This article was previously published under Q81817


When AddStor's SuperStor program is installed and the MS-DOS device driver RAMDRIVE.SYS or DRIVER.SYS is loaded, the reported drive letter from RAMDRIVE.SYS is off by one drive letter.


SuperStor loads a device driver called SSTORDRV.SYS that uses the next available drive letter for its own use. When RAMDRIVE.SYS is loaded after SuperStor is loaded, RAMDRIVE.SYS reports that it is set up as drive Z, when it is really drive Y.

For example, if your system has one physical hard drive (drive C) when SuperStor loads, SuperStor uses drive D. When RAMDRIVE.SYS loads, it uses drive letter E. However, RAMDRIVE.SYS reports that it is set up as drive F, even though it is really drive E.

Add Stor is aware of this problem. There are no adverse effects from the missing drive letter, other than confusion it may cause you.


To work around this problem, load RAMDRIVE.SYS before the SuperStor driver (SSTORDRV.SYS).

If you load RAMDRIVE.SYS before the SSTORDRV.SYS driver, the SuperStor drive letter is then off by one rather than RAMDrive. But because you don't need to access the SuperStor drive, it should pose no problems.


SuperStor is a disk storage maximizer similar to Stacker.

Modification Type: Major Last Reviewed: 9/30/2003
Keywords: KB81817