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Q141793: PRB: Disk Size Reported By Compaq Differs from Windows NT

Article: Q141793
Product(s): Microsoft Windows NT
Version(s): 3.10 3.50 3.51
Operating System(s): 
Keyword(s): 
Last Modified: 08-AUG-2001

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The information in this article applies to:

- Microsoft Windows NT Server version 3.1 
- Microsoft Windows NT Workstation version 3.1 
- Microsoft Windows NT Advanced Server, version 3.1 
- Microsoft Windows NT Workstation versions 3.5, 3.51 
- Microsoft Windows NT Server versions 3.5, 3.51 
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SYMPTOMS
========

When you install a Compaq computer, the number of bytes recognized by Disk
Administrator may be substantially different from what is reported by the Compaq
disk utility.

For example, on a Compaq Proliant 4500, SmartScsi Controller with four 2.1
gigabytes drives, the available disk space was reported by Compaq Smart Start as
having 8 gigabytes available. However when Windows NT 3.5 was installed, Disk
Administrator reported available disk space at 6 gigabytes.

CAUSE
=====

This occurs when the disk is improperly formatted during setup. If a Compaq
computer has not been previously formatted using the FORMAT FOR NT option, the
size of the disk reported by disk administrator may differ significantly.

Windows NT uses a different method of calculating the disk sectors available. For
more information about this, please see the following articles in the Microsoft
Knowledge Base:

  ARTICLE-ID: Q111045
  TITLE : Boot Partition Size Limit with Compaq SmartSCSI Controller

  ARTICLE-ID: Q138064
  TITLE : Search Order for OLE Servers

RESOLUTION
==========

In order for Windows NT's Disk Administrator to see the correct number of
sectors, the disk must be formatted under Compaq's EISA config utility, under
advanced options, option #4, NT 3.5 MAX Partition.


The Compaq products discussed here are manufactured by Compaq Corporation, a
vendor independent of Microsoft; we make no warranty, implied or otherwise,
regarding these products' performance or reliability.

Additional query words: 3.10

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Keywords          :  
Technology        : kbWinNTsearch kbWinNTWsearch kbWinNT351search kbWinNT350search kbWinNTW350 kbWinNTW350search kbWinNTW351search kbWinNTW351 kbWinNTW310 kbWinNTSsearch kbWinNTS351 kbWinNTS350 kbWinNTS310 kbWinNTAdvSerSearch kbWinNTAdvServ310 kbWinNTS351search kbWinNTS350search kbWinNTS310search kbWinNT310Search kbWinNTW310Search
Version           : 3.10 3.50 3.51

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