[Bug #565] kernel command returns error 18 when grub loads from ntldr.

[nobody]

=================== BUG #565: FULL BUG SNAPSHOT ===================
http://savannah.gnu.org/bugs/?func=detailbug&bug_id=565&group_id=68

Submitted by: chrispe                   Project: grub                           
Submitted on: 2002-Jun-08 16:41
Category:  Booting                      Severity:  Major                        
Priority:  None                         Bug Group:  Software Error              
Resolution:  None                       Assigned to:  None                      
Status:  Open                           Release:  0.90                          
Reproducibility:  Every Time            Planned Release:                        

Summary:  kernel command returns error 18 when grub loads from ntldr.

Original Submission:  I'm trying to load Linux from the Win2k bootloader 
(NTLDR), via Grub.

I installed grub stage1 onto a floppy using the following commands:

grub> root (hd1,4)
grub> setup (fd0)
grub> quit

setup found my grub files, failed to embbed stage 1.5 and used the following 
install command:

install /boot/grub/stage1 d (fd0) /boot/grub/stage2 p /boot/grub/menu.lst

This boot floppy successfully boots, runs stage2, pops up the graphical menu, 
with a splash screen and boots Linux from (hd1,4)/bzImage.

Next, I copied this working grub stage 1 from the floppy to my Windows C drive 
(using dd) and set up C:\boot.ini to run it from NTLDR.

Grub runs okay from NTLDR and successfully loads stage2, pops up the graphical 
menu, with a splash screen, but fails to boot Linux from (hd1,4)/bzImage with 
error 18.

This seems strange. How come it can't load bzImage, when it can load the menu & 
splash screen just fine from the same partition?

I used the testload command on (hd1,4)/bzImage and it worked fine (the numbers 
at the end matched). However, when I execute the kernel command, I get error 
18...

grub> kernel (hd1,4)/bzImage root=/dev/hdb7

Error 18: Selected cylinder exceeds max supported by BIOS

I can't find any differences between booting from the floppy MBR & from NTLDR. 
The geometry command returns the same numbers, testload returns the same 
numbers. It is just that the kernel command fails in the NTLDR case.

Chris.



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