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Article #5615

Something must be wrong... (AT&T PC6300)

#5615
From: a hacker
Date: Wed, 12 Feb 1986 21:29
26 lines
1436 bytes
On my AT&T PC 6300, I ran a short simple test to determine
the effectiveness of using a QD/DS disk in the disk drive.

Here is what happened:

1)  I used a DD/DS disk with several files on it (all non-hidden).
2)  I copied it onto a QD/DS disk with MS-DOS "COPY"
3)  I copied it onto a QD/DS disk with Central Point Software's "Copy-II-PC"

When I added all the numbers up of the files and bytes free on
the disk (using UNIX's "bs"), I made an interesting discovery!

Look!
			-----------    QD/DS   -------------------
Disk #1 (DD/DS)		Disk #2 (Copy)		Disk #3 (CopyIIpc)
145418 bytes		332406 bytes		145418 bytes

Something MUST be wrong, because the disks are supposed to have
360K in MS-DOS version 2.11.

All of the disks, by the way, were pre-formatted, one after the
other, and all three were said to contain 362496 bytes.

What's wrong?

hou2e!ksl
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Message-ID: <815@hou2e.UUCP>
Path: arc1-ca.pugleaf.net!utzoo!watmath!clyde!burl!ulysses!mhuxr!mhuxt!houxm!hou2e!ksl

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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10 5/3/83 based; site hou2e.UUCP
Path: arc1-ca.pugleaf.net!utzoo!watmath!clyde!burl!ulysses!mhuxr!mhuxt!houxm!hou2e!ksl
From: ksl@hou2e.UUCP (a hacker)
Newsgroups: net.micro.pc
Subject: Something must be wrong...  (AT&T PC6300)
Message-ID: <815@hou2e.UUCP>
Date: Wed, 12-Feb-86 16:29:12 EST
Article-I.D.: hou2e.815
Posted: Wed Feb 12 16:29:12 1986
Date-Received: Fri, 14-Feb-86 01:28:46 EST
Distribution: net.micro.pc,net.micro.att
Organization: at his home computer
Lines: 27