williamo@hpcupt1.HP.COM (William O'Shaughnessy) (09/03/88)
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