Path: utzoo!attcan!uunet!husc6!cmcl2!nrl-cmf!ames!pasteur!ucbvax!hplabs!hpda!hpcupt1!williamo
From: williamo@hpcupt1.HP.COM (William O'Shaughnessy)
Newsgroups: comp.sys.ibm.pc
Subject: Using 720kb 3.5" as 1.44 meg diskettes
Message-ID: <5930015@hpcupt1.HP.COM>
Date: 2 Sep 88 20:02:08 GMT
Organization: Hewlett Packard, Cupertino
Lines: 27

I did a data integrity check on 4 different brands of 720kb 3.5"
diskettes that I had converted to 1.44 meg and filled with data
2 weeks ago.  I tested 8 diskettes, 4 different brands, doing data
verify and found no errors at the 1.44 meg density.

The method for testing the data integrity did not require any
programming, although it did require a hard disk.  I copied a 
directory with approximately 1.4 megabytes of files in it from
my hard disk to the 1.44 drive, drive b: on my system.  To verify
the data I then used the DOS COMP command.  With the source
directory as the current working directory I issuued the command:
 
  >COMP *.* B:

This command will compare all files in the source directory with
the correspondingly named files on drive B:.  I detected no
errors on the 8 diskettes I tested even though they were written
2 weeks ago.

By the way, I am now using a soldering iron to make the 1.44 hole
(the $3.00 hole).  It works well but be sure to do it in a well
ventilated area.

As always there are no waranties or guarantees given or implied
for the above.  Its just the truth as I know it.

			     Bill O'Shaughnessy