When creating a swap file, you may receive an error message similar to
The partitioning scheme used on your hard disk prevents the
creation of a permanent swap file.
This error message can display whether you use the Virtual Memory
dialog box during a custom Windows Setup, or the 386 Enhanced option
in Control Panel to create swap files.
This message can result from one of the following:
- A partition manager
- A virus
- Uninitialized fields in the partition table
Windows is very careful about what hard disks it uses when it creates
permanent swap files. Windows would cause serious disk errors and data
loss if it incorrectly modified a disk that is formatted with special
software. To prevent damaged disks and lost data, Windows makes
absolutely sure that it understands the exact format of the disk.
One of the checks performed by Control Panel (and Setup, because Setup
uses Control Panel to create a swap file when a custom setup is
performed) is to look for disk partitioning software, such as Disk
Manager or SuperStor. This is done by examining the partition table on
If partitioning software is found, Control Panel displays an error
message. This message does not imply that the partitioning software is
incompatible with Windows; it simply means that a permanent swap file
cannot be created on that disk.
The following conditions can cause Control Panel to mistakenly detect
- Another operating system is installed on the computer and happens
to use the same partition type number (there are only 255 partition
type numbers available); that partition is detected as one using
partitioning software. There is no way to work around this
problem if this is the cause.
- The machine is infected with a virus. Some viruses create their own
"foreign" disk partitions and set themselves up as the boot
operating system (for example, the Michelangelo virus). If no other
explanation for the disk partition error can be found, the disk
should be scanned for viruses. When the virus is removed, Windows
should be able to create the permanent swap file.
- The disk drive may have been partitioned in the past with
partitioning software, and was later repartitioned using MS-DOS
version 4.01 or 5.0 FDISK. MS-DOS and FDISK support only four
partitions on a disk, while some partition software supports more
than four. Therefore, FDISK does not reset partitions in the extra
entries. As a result, Windows interprets these invalid entries
as an incompatible disk partition.
- Ontrack Software Disk Manager-N utility partitions and formats
part of a hard drive as a Novell file server. When a machine
configured with Disk Manager-N is started, the Novell utility
attached to the master boot record (MBR) loads and gives you the
option of starting the system on the MS-DOS partition or to the
Novell file server partition. If your hard disk has been
partitioned with Disk Manager-N, you cannot create a permanent
swap file under Microsoft Windows 3.1.
The following text was taken from the Disk Manager README file:
DISK MANAGER - N
DISK MANAGER - N is a disk installation utility tailored
specifically for the NOVELL local area network. This utility
replaces the COMPSURF utility from NOVELL. DISK MANAGER - N
installs disks running under NETWARE 86, ADVANCED NETWARE 86,
and ADVANCED NETWARE 286.
KBCategory: kbnetwork kbdisplay kb3rdparty kbsetup kberrmsg
Article ID: 82373 - Last Review: October 10, 2003 - Revision: 2.0
- Microsoft Windows 3.1 Standard Edition
- Microsoft Windows 3.11 Standard Edition