Microsoft KB Archive/78949

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Toshiba HARDRAM Battery Back-Up RAM and Permanent Swap File

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Q78949

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The information in this article applies to:


 * Microsoft Windows versions 3.0, 3.0a, 3.1, 3.11

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SUMMARY
The Toshiba HARDRAM battery back-up RAM causes the following system error when a permanent swap file has been set up on the RAM drive

Unable To Read From Drive:x

where x is the assignment for the HARDRAM drive.

The following line must be added to the [386Enh] section of the SYSTEM.INI file:

VirtualHDIrq=off

MORE INFORMATION
The Toshiba HARDRAM is a battery-backed-up, RAM-based RAM drive. The battery backup allows information stored in the HARDRAM chips to be retained when the computer is rebooted or turned off.

The VirtualHDIrq= switch allows Windows in 386 enhanced mode to terminate interrupts from the hard disk controller, bypassing the ROM routine that handles these interrupts. Some hard drives might require that this setting be disabled for interrupts to be processed correctly. If this setting is disabled, the ROM routine handles the interrupts.

Additional query words: 3.0 3.00 3.0a 3.00a swapfile 3.1 3.10 3.11

Keywords :

Issue type :

Technology : kbWin3xSearch kbWin300 kbWin300a kbWin310 kbWin311