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Using NT Loader WITHOUT installing NT

Posted on 1998-08-27
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Last Modified: 2013-12-15
I installed both Linux and Win98 on my system. I would like to use NT Loader (not lilo or a boot disk) to choose which OS to boot at startup (I already know how to boot to Linux from the NT Loader). Can I start installing WinNT and cancel WinNT setup once NT Loader setup is done?
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Question by:grosbill
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Author Comment

by:grosbill
ID: 1630407
Edited text of question
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by:grosbill
ID: 1630408
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Expert Comment

by:vx
ID: 1630409
You should begin installing NT to your computer and when it finishes copying files (I believe that's when the automated sequence stops), abort the installation. Edit C:\BOOT.INI and reboot.

Good luck
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Author Comment

by:grosbill
ID: 1630410
All right! The stuff worked out well, thanxs!

I launched WinNT setup and rebooted when prompted before the setup by itself.
Then I deleted all WinNT files except c:\boot.ini, c:\ntldr and c:\bootsect.dos.
I also edited the boot.ini to point to my Linux kernel image.
That works...

I have an extra question:

It must be possible to install NT Loader whithout running the NT setup only by copying
boot.ini, ntldr and bootsect.dos to c:\ and by modifying the master boot record (MBR)
and/or the partition boot sector (PBS) using the "dd if=... of=... bs=512 count=1"
command under Linux...

So I tried to setup ntldr once more by erasing the files and running "sys c:" from
a bootdisk so as to reset the MBR and the PBS after their backup under Linux.

Then I restored the Nt's PBS (it looks like the MBR needs not change) and copied
ntldr and boot.ini to c:\. But I lost bootsect.dos (argggg!) and I am now able to boot
under Linux but it seems like the bootsect.dos I use is not valid (I copied the dos PBS
to c:\bootsect.dos) and Windows 98 no longer starts...

Have you got any idea of what is to be done with the MBR and the PBS to setup
NT Loader once again?

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Expert Comment

by:vx
ID: 1630411
Perhaps you should boot from a boot disk and run fdisk /mbr. I'm not sure, but it just could do the job.

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Accepted Solution

by:
benten earned 50 total points
ID: 1630412
I don't think "fdisk /mbr" will not do what you want.

Try that process again but after you "sys c:" from a win98 boot floppy copy the boot sector to
the "bootsect.dos" file.  The NT loader uses the bootsector so it needs the original one in a file.

To copy the boot sector you will need Linux "dd" (could be hard to boot though without the loader working after the "sys") or win98 "debug".  I assume you know how to use "dd" from your earlier comments.

For "debug":

From DOS (a win98 DOS window should be fine), type:

debug
nbootsect.dos
rcx
200
l100 2 0 1
w
q

This will save the boot sector to a file called bootsect.dos
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