[comp.sys.ibm.pc.misc] Upgrading from MS-DOS 3.2 to MS-DOS 4.1

frank@odetics.com (Frank Merrow) (02/28/91)

Hi,

I am about to upgrade my home system from MS-DOS 3.2 to MS-DOS 4.1.  (Yes
I have already been told 5.x is due out soon.)  The reason I am updating
is to access the extra 8 Megs on my hard disc.  Rather than reformating
the whole disc as a single partition, I am wondering if I can just:

"sys" the current DOS partions to update it to 4.1 and then

use the new "fdisk" to create an extended partion and bring it up

OR

Do I have to totally start over by "un-fdisking" my 3.2 partion and then
build my hard disc from scratch.  I guess the real question is how close
the FAT entries and such are between 3.2 and 4.1 and how compatable the
new fdisk is with the old.  Does anyone have experience in this area.
I can build everyting from scratch, but I am basically lazy and would
rather not if I can get away with it.

Frank
frank@odetics.com or uunet!odetics!frank

gettys@yacht.enet.dec.com (Bob Gettys) (02/28/91)

	The FDISK's are incompatible. You've got to tear it all down and start
over. One hint - Do NOT, repeat Do NOT use DOS backup to do the backup.
They  are also incompatible!!! Use one of the commercial or shareware
backup programs that will support DOS 4.01 - make sure it supports 4.01
first!!  I use PCtools V6.0 PCBACKUP myself. Mainly because of its tape
support.

	The steps would be:

1. back up the files
2. use 3.2 FDISK to remove all partitions
3. boot from a 4.01 floppy
4. use 4.01 FDISK to create the partition(s) you want
5. format those partitions with either DOS format another format program
5. load DOS 4.01
6. restore the rest of your files

NOTE: Don't mix DOS programs from the different versions.

	/s/	Bob

kabra437@pallas.athenanet.com (Ken Abrams) (03/02/91)

I let the original post get away from me so I don't know who originated
the question.  It went something like "Am upgrading from 3.2 to 4.1
in order to get access to an additional 8M on my hard disk" then goes on
to talk about creating an extended DOS partition under 4.1.

Something doesn't quite click with this story.  3.2 is fully capable of
creating and using additional logical drives in an extended partition,
isn't it?  If that is true, and I properly understood the authors
requirements, then he probably doesn't need to change to 4.1 to 
accomplish his objective.

-- 
========================================================
Ken Abrams                     uunet!pallas!kabra437
Illinois Bell                  kabra437@athenanet.com
Springfield                    (voice) 217-753-7965