>I've tried to upgrade my dos version on my IBM AT 286 clone. I have a
>MS-Dos 3.3 currently and I got an IBM Dos 4.01 from a friend. I had
>problem to upgrade since these two dos have some difference. But I don't
>want to spend more than $120 to buy a MS-dos 4.0. Is there any way to
>upgrade a Ms-dos with an IBm Dos without re-formatting my hard drive
>first? I like the dos 4.01 very much but just hesitate to rebuild my
>hard drive. Any suggestions are more than welcome. Thanks in avance.
I have 'upgraded' from MS-DOS 3.3 to IBM DOS 4.0 by simply using the
SYS command to transfer the system to the hard drive. HOWEVER, this
will not re-partition the hard drive, so you're still stuck with
a partition that is 32MB or less. It is my opinion that the largest
or perhaps the only reasons to switch to DOS 4.0 are:
1.) Have disk partitions greater than 32 MB.
2.) Software compatibility.
If YOUR reason is #1, then your going to have to re-format your hard
disk ANYWAY. When you consider that DOS 4.0 takes up more of your
base (640k) memory than previous relesses, your may want to stay with
DOS 3.3. I know many people who prefer 3.3 for that very reason.
But if you need Big disks and 4.0, bite the bullet and repartition.
Good luck . .
Harry Haas GTRI/RAIL/TDD "What makes it DO that!?" - Bones
Georgia Institute of Technology, Atlanta Georgia, 30332