[101803] in RedHat Linux List
Re: diskcopy for linux
daemon@ATHENA.MIT.EDU (Fred Smith)
Sun Nov 29 15:22:35 1998
Date: Sun, 29 Nov 1998 14:51:51 -0500
From: Fred Smith <fredex@fcshome.stoneham.ma.us>
To: redhat-list@redhat.com
Mail-Followup-To: redhat-list@redhat.com
In-Reply-To: <Pine.LNX.4.04.9811291541200.747-100000@alpha.computers.org>; from Iztok Polanic on Sun, Nov 29, 1998 at 03:41:44PM +0100
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On Sun, Nov 29, 1998 at 03:41:44PM +0100, Iztok Polanic wrote:
> Hello !!!
>
> Is the diskcopy for linux???
There is no 'diskcopy' command as such, but it's not hard to create
one with a shellscript.
Here's a little hack of a shellscript you could use, written off the
top of my head just for you:
#!/bin/sh
dd if=$1 of=$2 bs=10240
which will work if source and destination drives are the same capacity
but different drives. If you're copying from one drive to another
diskette in the same drive, try:
#!/bin/sh
dd if=$1 of=/tmp/dd.$$ bs=18432 # copy to temp file
echo "Insert destination diskette then press ENTER..."
read kb
dd if=/tmp/dd.$$ of=$1 bs=18432 # copy the tmp file to diskette
rm -f /tmp/dd.$$ 2>&1 > /dev/null # delete the tmp file
Note that the 18432 used as the value of 'bs' is not critical, it could be
almost anything, bigger is generally better. Best is if it is a whole-
number multiple of the diskette track size (for 3.5HDdrives 18 sectors *
2 sides * 512 bytes = 18432). The only difference it makes is in the
speed of the read/write operation.
In each case, the parameter(s) to the program are the /dev/fdxxx
special files describing your diskette/drive combination. E.g., if
you're copying a HD 3.5" diskette using the second sample, and the
sample program was in a file named "dcopy" (which has been given
execute permission):
dcopy /dev/fd0H1440
Also, as a freebie, here's a shellscript I use for formatting DOS
diskettes under Linux:
#!/bin/sh
# low-level format a diskette and write a validated DOS
# filesystem on it.
fdformat -n $1
if [ $? = 0 ]
then
/sbin/mkdosfs -vc $1
else
echo Format failed!
fi
echo
echo done...
echo format another?
read kb
case $kb in
y|Y)
exec $0 $*
;;
*)
;;
esac
to use this one you need '/sbin/mkdosfs' which came on my old Red Hat 4.1,
I don't have any idea if they still ship it or not.
Fred
--
---- Fred Smith -- fredex@fcshome.stoneham.ma.us ----------------------------
"Not everyone who says to me, 'Lord, Lord,' will enter the kingdom of
heaven, but only he who does the will of my Father who is in heaven."
------------------------------ Matthew 7:21 (niv) -----------------------------
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