Err Msg with Adaptec 1542c: Cannot Write to Drive C:

 Last reviewed: November 22, 1994
Article ID: Q103914
The information in this article applies to:
  • Microsoft Windows operating system versions 3.1, 3.11
  • Microsoft Windows for Workgroups versions 3.1, 3.11

SYMPTOMS

When you run Windows or Windows for Workgroups and use an Adaptec 1542c bus-mastering SCSI hard disk controller, you may receive the following error message: 

   Cannot write to drive C:

CAUSE

The Adaptec 1542c controller does not need a device driver to function correctly in most circumstances. However, on some hardware, it cannot perform necessary functions (such as double buffering for direct memory access) without a device driver.

WORKAROUND

According to Adaptec Technical Support, a possible workaround is to use ASPI4DOS.SYS, which is normally used only with the 1542b SCSI controller. Load this driver in the CONFIG.SYS file as follows: 

   DEVICE=C:\DOS\ASPI4DOS.SYS
This line assists the controller in performing its functions.

MORE INFORMATION

You can obtain ASPI4DOS.SYS from the Adaptec bulletin board service or Adaptec Technical Support.

The Adaptec 1542c Controller is manufactured by Adaptec, a vendor independent of Microsoft; we make no warranty, implied or otherwise, regarding this product's performance or reliability.

KBCategory: kbhw kb3rdparty kberrmsg
KBSubcategory: win31 wfw wfwg
Additional reference words: 3.10 3.1 3.11 ASPI4.DOS

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Last reviewed: November 22, 1994
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