Int 25H to access BIOS Parameter Block

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#854

From: Avi Margolin
Date: Wed, 12 Aug 1992 20:53

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I am trying to use int 25H (Absolute Disk Read) to access the 
BIOS parameter block of a logical hard drive. The interrupt works
for floppy and hard drives from within a DOS program, however
in Windows protected mode it only seems to work for floppy 
drives. My purpose for reading the BPB is to obtain the Volume
Serial Number of the logical drive. If you know of any way to
read the Serial Number from within a Windows program, please 
let me know. Please respond by E-Mail and I'll post a summary.

Thanks. Avi

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Message-ID: <Bsw216.F71@magna.com>

Path: arc1-ca.pugleaf.net!sparky!uunet!magna!avi

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Newsgroups: comp.os.msdos.programmer,comp.windows.ms.programmer
Path: arc1-ca.pugleaf.net!sparky!uunet!magna!avi
From: avi@magna.com (Avi Margolin)
Subject: Int 25H to access BIOS Parameter Block
Message-ID: <Bsw216.F71@magna.com>
Organization: Magna Software Corporation
Date: Wed, 12 Aug 1992 20:53:29 GMT
Lines: 10