On Tue, 26 Oct 1999 18:50:20 +0300, Jaak Kaljo wrote:
>>>
>>BOTH! Get some nice bootmanager that allows more than one primary
>partition. I would not dream of leaving one of them alone.
>>
>>Per B.
>
>
>
>I made an extended partition and installed Caldera DR-DOS 7.03 on it. And I
>used a bootmanager called Extended-IPL (made by Takamiti Kimura 1997) which
>marks selected partition bootable. Extended-IPL even boots OS without
>checking validity of partition (whether 511th bytes of the partition is
>0xaa55). I couldn't still boot DR-DOS from extended partition, my computer
>is just hanging...
DOS, probably all flavours, can only be booted from a primary partition on the first
disk (within the first 1024 cylinders), DOS 3.3 within the first 32 mb. OS/2 v. 1.x
also
needs to be on a primary partition on the first disk. I think there can be up to four
primary partitions on a harddisk, only one can be visible at the time. Practically
there can
be only two C: (maybe three), as partitions are needed for the bootmanager (IBM) and
there is some shadow partition too (I can not remember exactly the details now).
>
>Then I learned from a manual of another bootmanager (OS Boot Select Version
>2.0 Beta8) that "almost no operating system is able to boot straightforward
>from a second, third, etc. disk" because "the most operating systems are not
>prepared to do it".
Yes, but as long as the bootmanager is on the first disk, Linux and OS/2 (v.2 and
above) can be on other disks.
>
>Then I learned from SurvPC Survey -99 that there are a dozens computers with
>more than one OS on it, DR-DOS being one among others.
DR-DOS can coexist with Windows95 on one partition, but there are always problems with
partitions accessed by Windows95 as its long filenames sometimes are seen
as passwords by DR-DOS.
There is another option, there are racks that makes the harddisk removable, that way
it is possible to have several "first" disks.
>
>How on earth do they do that?
>
>Have I chosen the wrong boot-manager? Or am I just too stupid?
I never tried any other than IBM's bootmanager, but there are lots of them, like;
http://www.penguin.cz/~mhi/mbtmgr/
(I do not know if it is good)
Per B.
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