🚀 go-pugleaf

bvs@iinet.net.au (Martin Loeffler) wrote:

>smetan@titan.trl.OZ.AU (Bohdan Smetaniuk) wrote:

>>I submitted the following question several days ago with no responses:

>>------------------------------------------------------------------
>>Can anyone help me?

>>I am trying to install Warp Connect (red) on an IBM 350 - P90.

>>The partitions on my disk are approximately as follows:

>>    250MB Primary - DOS/Windows.
>>      2MB Boot Manager
>>    120MB Logical HPFS (for installing Warp Connect)
>>    700MB Free space
>>    120MB Logical (to be formatted as HPFS after installation)

>>After the installation program copies whatever it requires from the
>>CD ROM, it tells me to press enter to restart the machine. Instead of being
>>rebooted into OS/2 to complete the install, the following happens:

>>    - The message "Error reading Disk 2. Press any key" appears (I only
>>      have one disk).

>>    - After I press a key, the boot manager shows a menu. Only the DOS/Win
>>      partition appears on the menu.
>>--------------------------------------------------------------------

>>Since then I've discovered that my 1.08 GB disk has 4896 cylinders and
>>that Boot Manager must be loaded in the first 1024.

>>Anyway, I shrunk the first partition to 180 MB, but have the same problem.
>>A little further reading reveals that all partitions containing an operating
>>system must be within the first 1024 cylinders (thanks IBM for making
>>your software and hardware work together so well :-( ).

>>Some questions:

>>+ Do I have to put OS/2 in a partition which is *fully* within the first
>>1024 cylinders? If yes, I assume that this means that it must be a primary
>>partition.

>>+ What are the implications if I want to run Windows programs on the
>>first partition? (my OS/2 version is without Windows)?

>>+ I had hoped to have several operating systems running on my PC but the
>>cylinder problem could make this difficult. Would System Commander overcome
>>the difficulties?

>>+ Can the OS/2 version of Partition Magic function in a DOS environment? i.e.
>>can I use it to further shrink my first partition before I install OS/2.

>>Any other words of wisdom on this topic will be greatly appreciated.


>>Bohdan Smetaniuk

>1) Yes, OS/2 must be completely within the first 1023 cylinders.
>     OS/2 can boot off of a LOGICAL partition i.e. it doesn't have to
>     be primary. 
>    NOTE: unless you have a recent bios which maps the drive to 
>    within 1024  cylinders or less only HPFS will be able to use the 
>    remaining space..
Minor correction,
OS/2 can handle cylinder addresses as high as you like (the limit is
very high) BUT until OS/2 is fully loaded and operational the BIOS is
handling all the IO and the operating system loader is VERY DOSlike.
This is the base cause of the 1023 cylinder limit.
 

>2) You can set up a primary partition with DOS+WIN or just win95.

>3) I don't know System commander. I suspect you would have to
>    upgrade your bios. You might also have to do a low level format
>   although I'm not sure. You'd better ask a hardware person.

>4) I've just been using Partition Magic (for the first time) and it's
>    quite neat. My copy of version 2 came with dos executables
>   as well as OS/2 ones. The DOS executable will be limited
>  by the bios i.e. 1024 cylinders.
> 
>Good Luck