Re: Dual Boot NextStep, OpenStep

[Richard van Paasen]

I encountered some weird behaviour, read on ...

Stefan Böhringer wrote:

> It is unusual that you do not see any partitions but depending on your
> disk size this may be due to different CHS-mappings comparing Linux with
> NS/OS.
That seems to be a problem on my machine. The fdisk output for the disk 
on which OpenStep is running is listed below: there are no partitions in 
use and the drive size differs according to the drive and bios. I tried 
to change the bios settings from LBA to NORMAL and LARGE mapping of CHS 
parameters, but that doesn't work: OpenStep can't boot then because the 
boot loader cannot find the config files. The same behaviour is shown 
for the NextStep disk.

Anyway, I can mount the NextStep harddisk from OpenStep (it was already 
mounted for me on /Disk). Using this, I edited the fstab file on the 
NextStep disk and set the mountpoint of / to /dev/hd1a. This way 
NextStep should be able to boot from the second harddisk with the 
correct root partition.

After rebooting, I typed the following on the boot prompt:

   hd(1,1)mach_kernel rootdev=/dev/hd1a

But... as I already suspected, the boot loader responds that the 
partition is invalid. It however continues loading after 3 retries. Then 
it continues in diagnostic mode,  and low and behold, after a few 
seconds I see NextStep coming up!!!

This puzzles me, did the boot loader start the correct kernel? Maybe it 
started the kernel from the OpenStep partition with the NextStep root 
partition! How can I tell?

Richard.


FDISK OUTPUT in OPENSTEP
======================================================
OpenStep:3# fdisk
NeXT fdisk v1.02

Device: /dev/rhd0h
No partitions in use

  Unused Blocks     Start   Size
  -------------------------------
  Free Space           0     812

Fdisk main menu
----------------
1) Create a new partition
<...>
6) Save changes and quit

Enter 1-6: 4

Partition Table
----------------
 Act  H  S Cyl   Id   H  S Cyl     Begin      Size
 ---  -  - ---   --   -  - ---     -----      ----
  0   0  0   0    0   0  0   0         0         0
  0   0  0   0    0   0  0   0         0         0
  0   0  0   0    0   0  0   0         0         0
  0   0  0   0    0   0  0   0         0         0


Disk Information
-----------------
Disk statistics according to device driver and bios:
   device: 813 Megabytes, 1665216 sectors
   bios:   812 Megabytes, 1663200 sectors
       cylinders = 825, heads = 32, sectors/track = 63

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