System hangup with atdisk driver

Setup:
NT 4.0
Phoenix Bios 4.05
8.4 GB HDD

This setup works fine with the ATAPI driver installed.  The problem is that there is a system interface with external process controls.  This interface conflicts with the ATAPI driver.  On drives smaller that 6GB, this has not been a problem.  We have disabled the ATAPI driver and enabled the ATDISK driver.  Enabling the ATDISK on the larger drive casues the system to hang shortly after the memory test.

What is the largest size drive that the ATDISK driver can handle?  If it can handle an 8.4GB drive, how can I solve my problem?

Thank,
kev
SweetLeafAsked:
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waynebConnect With a Mentor Commented:
You would have to delete this question and then post a 100 point ? for madduck and also one for wayneb
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waynebCommented:
What service pack level are you running?
Maybe there is a fix in one of the other service packs, I know that service pack 4 has fixes for large ide drives.  Also the system partition on Winnt has to be 7.8 gb or less in size
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SweetLeafAuthor Commented:
I am pretty sure that it is service pack 4.  I did not know about the 7.8 gb partition size on NT.  I will try that and let you know what happens.

Thanks,
kev
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SweetLeafAuthor Commented:
I have found that service pack 5 is installed.  There are two partitions, both are Fat16.  Each partition is 2 gb.
The other 4.4 gb is left as unused space.

Thanks,
kev
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MaDdUCKCommented:
the system partition has to be smaller than 2Gb and within the first 2Gb of the drive. where does atdisk come from? what interface?
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SweetLeafAuthor Commented:
The first partition is drive C and is the system boot partition.  it is currently 1.2Gb.

The second partition is drive D and  is 2Gb. It contains the winnt directory.  both partitions are formatted as FAT/16.

ATDISK is a device driver from Windows NT 4.0.  It was originally designed to interface with IDE drives but has always worked on EIDE drives 6Gb and smaller.

I hope that I understand the question.  If not, let me know

kev
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SweetLeafAuthor Commented:
It seems to have been something with seagate hard drives and the particular version of the bios?  How can I give both MaDdUCK and wayneb 100 points each?

kev
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