Bug 65034 – wont boot windows NT

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Bug 65034 - wont boot windows NT

Summary:	wont boot windows NT

Status:	CLOSED WONTFIX

Aliases:	None

Product:	Red Hat Linux
Classification:	Retired
Component:	grub (Show other bugs)
Sub Component:
Version:	7.3
Hardware:	i386 Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Jeremy Katz
QA Contact:
Docs Contact:

URL:
Whiteboard:
Keywords:

Depends On:
Blocks:
	Show dependency tree / graph

Reported:	2002-05-16 09:34 EDT by joel
Modified:	2016-10-03 16:11 EDT (History)
CC List:	0 users

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2002-12-29 02:15:44 EST
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
patch to make grub boot windows NT 4.0 (502 bytes, patch) 2002-05-16 09:38 EDT, joel	no flags	Details \| Diff
spec file to include my patch (6.84 KB, text/plain) 2002-05-16 09:40 EDT, joel	no flags	Details
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
oVirt gerrit	65034	master	MERGED	resourceManager: Add module api	2016-10-03 16:11 EDT

Groups: None (edit)

Description joel 2002-05-16 09:34:47 EDT

From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.0rc1) Gecko/20020417

Description of problem:
The version of grub included with RH 7.3 won't boot windows NT 4.0 SP3 on my
system. NT boot fails with bluescreen "INACCESSIBLE_BOOT_DEVICE". Before upgrade
to RH 7.3 my system worked fine as a triple boot setup: /dev/sda1 WinNT;
/dev/sda2 Win95; /dev/sda3 RH Linux. Before upgrade system was running RH 7.0
and triple boot with Lilo was working fine.

Version-Release number of selected component (if applicable):


How reproducible:
Always

Steps to Reproduce:
1. Upgrade to RH 7.3
2. Choose grub as bootloader
3. Add other OSes to /etc/grub.conf
	

Actual Results:  Win95 and Linux boot fine, WinNT bluescreens when trying to boot

Expected Results:  All three OSes should boot

Additional info:

Research on web indicated that WinNT expects bootstrap loader to begin with a
CLI instruction. Checking grub sources shows it starts with a JMP followed by a
CLI. Solution: Change 1st instruction to a CLI, remove a NOP and JMP to main
part of bootstrap code. Rebuild and reinstall grub. Tested on my triple boot
system and a normal single boot RH 7.3 system and works.

Comment 1 joel 2002-05-16 09:38:11 EDT

Created attachment 57584 [details]
patch to make grub boot windows NT 4.0

Comment 2 joel 2002-05-16 09:40:34 EDT

Created attachment 57585 [details]
spec file to include my patch

Comment 3 Jeremy Katz 2002-05-20 16:41:20 EDT

Patch sent upstream to the grub mailing list for comments

Comment 4 Jeremy Katz 2002-12-29 02:15:44 EST

This patch isn't valid because if you put the modified version of GRUB on a FAT
floppy or partition, Windows no longer recognizes it as properly formatted. 
Since there have been no other reports of this being a problem, I'm not really
able to do much more.

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