Skip site navigation (1)Skip section navigation (2)
Date:      Mon, 23 Jul 2012 03:10:40 -0700
Subject:   Re: fsck on FAT32 filesystem?
Message-ID:  <>
In-Reply-To: <>
References:  <>

Next in thread | Previous in thread | Raw E-Mail | Index | Archive | Help
Robert Bonomi <> wrote:

> MSDOS/PCDOS had -no- O/S functions to directly access actual disk
> devices.  The ONLY fuctionality provided to the user, by the "O/S"
> was filesystem based access.  To get 'raw' device access, one had 
> to bypass the O/S entirely, and use direct BIOS calls (INT 13h).


MSDOS/PCDOS had no _documented_ functions to directly access the
disks, bypassing the file system, but the functions _did_ exist.
The debugger's "read sector" and "write sector" commands used them,
and I suspect chkdsk, scandisk, and format probably also used them
although I never had occasion to verify one way or the other.

Want to link to this message? Use this URL: <>