https://mskb.pkisolutions.com/kb/263044

https://web.archive.org/web/20150224200130/http://support.microsoft.com:80/kb/263044

MS KB263044

Fdisk Does Not Recognize Full Size of Hard Disks Larger than 64 GB

NOTE: you can partition drives above 64Gb but you cannot partition larger than 512GB drives with this Fdisk !!!

Applies to:
    Microsoft Windows 98 and Windows 98SE


When you use Fdisk.exe to partition a hard disk that is larger than 64 GB (64 gigabytes, or 68,719,476,736 bytes) 
in size, Fdisk does not report the correct size of the hard disk.

The size that Fdisk reports is the full size of the hard disk minus 64 GB. For example, if the physical drive is 70.3 GB 
(75,484,122,112 bytes) in size, Fdisk reports the drive as being 6.3 GB (6,764,579,840 bytes) in size.


Cause
Fdisk uses some 16-bit values internally to calculate the size of the drive. Some of these variables overflow when the 
drive size is equal to or larger than 64 GB.


Resolution
A supported fix is now available from Microsoft, but it is only intended to correct the problem that is described 
in this article. Apply it only to computers that are experiencing this specific problem.

To resolve this problem immediately, download the fix by clicking the download link later in this article or contact 
Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone 
numbers and information about support costs, visit the following Microsoft Web site:
http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS
NOTE: In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support 
Professional determines that a specific update will resolve your problem. The usual support costs will apply to 
additional support questions and issues that do not qualify for the specific update in question.


NOTE: This hotfix is not designed for 48-bit logical block addressing (LBA) hard disks, and it is not supported on 
hard disks larger than 137 GB.

The English version (263044USA8.EXE) of this fix should have the following file attributes or later:

  Date      Time     Size    File name  Operating System		Internal File
  ---------------------------------------------------------------	-------------
  05/19/00  10:30am  64,428  Fdisk.exe  Windows 98			fdisk.98g
  05/18/00   8:35am  64,460  Fdisk.exe  Windows 98 Second Edition	fdisk.98s
				

NOTE: The package that installs this fix contains both Windows 98 and Windows 98 Second Edition versions of the fix. 
The package automatically installs the correct version.

