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The only Microsoft Operating Systems that natively support drives larger than 32 GB (to date) are Windows NT 4.0, 2000, ME, XP and .NET.

Windows 98 retail and 98 SE provide built in support for drives greater than 32 GB, however, you need to install ESDI_506.PDR (refer to Microsoft article Q243450 for more information). This allows ScanDisk to properly recognize (E)IDE hard disk clusters beyond 967,393. Failure to do so may cause ScanDisk not to run properly. Most Busmastering drivers for newer MB contain this fix, so it is not as large of an issue anymore.

Windows 95a, b, osr1 and osr2 do not support drives over 32 GB. Please refer to Microsoft article Q246818 for more information.

DOS uses CHS translation only for discs. For this reason, 8 GB is the maximum sized drive that DOS will support.



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