Article ID: 178558 - View products that this article applies to.
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When you restart your computer after upgrading Windows NT on a Hewlett- Packard NetServer with a Hewlett-Packard Array Controller, the following message is displayed:
At least one service or driver failed during system startup. Use the event viewer to examine the system event log for details.
The system event log shows the following event:
Event ID: 7026 Source: Service Control Manager Type: Error Description: The following boot-start or system-start driver(s) failed to load: HPDANT
During the upgrade, Windows NT was allowed to detect mass storage devices and loaded the DAC960NT driver, but the original HPDANT driver was not disabled.
Hewlett-Packard recommends that you use the Hpdant.sys driver with its Hewlett-Packard Array Controllers and not the Dac960nt.sys driver that comes with Windows NT. Perform the following steps to remove the Dac960nt.sys driver and install the latest Hpdant.sys driver from Hewlett- Packard without having to re-run the upgrade.
Hewlett-Packard provides a driver for the Hewlett-Packard Array Controller with its Hewlett-Packard NetServer Windows NT drivers disk, Hpdant.sys. Microsoft Windows NT comes with a different driver for the Mylex Array Controller card used in the Hewlett-Packard Array Controller. The Microsoft driver for the Mylex Array controller is Dac960nt.sys.
If, during the original installation of Windows NT, the option to specify additional devices was used with the Hewlett-Packard NetServer Windows NT drivers disk, the Hpdant.sys driver can be installed for the Hewlett- Packard Array Controller.
When running an upgrade installation over the original installation, mass storage detection is used instead of specifying the drivers; the Dac960nt.sys driver will be installed for the array controller. When restarting after the upgrade, you will see the error message that a service did not start. The system event log will show that the Hpdant.sys driver failed to load. This is caused by the Dac960nt.sys driver loading before the Hpdant.sys driver so that, when the Hpdant.sys driver attempts to load, it fails.
Article ID: 178558 - Last Review: October 26, 2013 - Revision: 3.0
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