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Article #1395

Re: Complete guide to MS-DOS file system

#1395
From: Jay B. Harlow
Date: Thu, 22 Feb 1990 19:26
26 lines
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In article <8915@wpi.wpi.edu> jhallen@wpi.wpi.edu (Joseph H Allen) writes:
>I have one question about the boot sector though.  One of the entries is
>called "hidden sectors".  Exactly where are these hidden sectors and what are
>they used for?  All hard disks seem to have exactly 1 track of hidden sectors
>in each partition.
>-- 

Hello (again)....

  If you read my earlier posting before i CANNED it, sorry i was wrong
(confused).   the Hidden sectors are the number of sectors on the hard disk
before this BOOTABLE partition. (master boot partition & other partitions..),
the entry for reserved sectors is used for a possible longer boot record,
which i hope to use in a small Protected mode OS i am playing with...
  so there is normally one track of Hidden sectors before your DOS partition
the mormal first partition on the Drive... only this doesn't hold for 
extended partitions.. :-(,  the boot code itself primarily uses the hidden
sectors to find where on the disk it is....

			Jay

-- 
		Jay B. Harlow	<harlow@plains.nodak.edu>
	uunet!plains!harlow (UUCP)	harlow@plains (Bitnet)

Of course the above is personal opinion, And has no bearing on reality...
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Message-ID: <3538@plains.UUCP>
Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!ogicse!plains!harlow
References: <8915@wpi.wpi.edu>

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Path: arc1-ca.pugleaf.net!utzoo!attcan!uunet!ogicse!plains!harlow
From: harlow@plains.UUCP (Jay B. Harlow)
Newsgroups: comp.sys.ibm.pc.programmer
Subject: Re: Complete guide to MS-DOS file system
Message-ID: <3538@plains.UUCP>
Date: 22 Feb 90 19:26:53 GMT
References: <8915@wpi.wpi.edu>
Reply-To: harlow@plains.UUCP (Jay B. Harlow)
Organization: North Dakota State University, Fargo
Lines: 26