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echo: os2prog
to: Mike Bilow
from: Andrew Clegg
date: 1995-02-24 04:57:34
subject: How Hpfs Works

Hi, Mike.

-=> Mike Bilow spaketh unto Andrew Clegg <=-

 MB> OS/2 does not really know about sectors per se.  At a low level, OS/2
 MB> uses a SCSI-like model for storage where blocks are allocated in some
 MB> native size for the media and sequentially numbered beginning with
 MB> zero.

So presumably... the kernel asks to read (for example) a particular block
based on its block number, and the disk driver converts this into a
cylinder-sector-head address which it thens asks the drive controller
itself to find? Or am I barking up the wrong tree..? No particular reason
for this, I don't have a desire to write disk drivers, just interested.

Andrew.

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