Knowledge Base

Problems Using TekRam VLB Controller with Windows 95

Article ID: 139429

Article Last Modified on 11/15/2006

Microsoft Windows 95

This article was previously published under Q139429

SYMPTOMS

When you are using a TekRam VLB controller with Windows 95, you may experience performance or MS-DOS Compatibility mode issues with hard disks with a capacity greater than 528 megabytes (MB).

When you experience such issues, the Ios.log file may contain the following information:

   ESDI sector mismatch
   Unit number 02 going through real mode drivers.
   Unit number 03 going through real mode drivers.
   Unit number 04 going through real mode drivers.

CAUSE

The Esdi_506.pdr driver supports only standard INT13 functions. It does not support sector remapping. This behavior is by design.

RESOLUTION

To enable protected-mode support for the TekRam VLB controller, please contact TekRam to inquire about obtaining a Windows 95-compatible driver for the controller.

For additional information about using the TekRam VLB disk controller, please consult the controller's documentation or manufacturer.

MORE INFORMATION

When you use a TekRam VLB controller with hard disks with a capacity greater than 528 MB, the track remapping and enhanced INT13 options must be enabled on the controller. Such translation schemes are not compatible with the Windows 95 Esdi_506.pdr driver. protected-mode support for this controller is limited to hard disks with a capacity less than 528 MB.

Keywords: KB139429