Toshiba HARDRAM Battery Back-Up RAM and Permanent Swap File

 Last reviewed: November 22, 1994
Article ID: Q78949
The information in this article applies to:
  • Microsoft Windows operating system versions 3.0, 3.0a, 3.1, 3.11

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=<Boolean> 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.

KBCategory: kbhw kb3rdparty
KBSubcategory: win30 win31
Additional reference words: 3.0 3.00 3.0a 3.00a swapfile 3.1 3.10 3.11

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Last reviewed: November 22, 1994
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