Dual-booting with QNX and other boot issues
Introduction
QNX is the operating system of choice for a small number of Physics
labs and classes. Much of the "official" documentation regarding
QNX is
sparse, thus it is the intention of PCS to document basic configuration
and support solutions within the system as they are discovered.
Changing the default boot OS
To activate the QNX operating system partition as default:
In Windows, log in as administrator.
Open a command prompt, and enter the command:
diskpart
At the Diskpart prompt, enter the commands:
select disk 0
select part 3
active
exit
Then close the window and restart. The system should boot into QNX.
To activate the Windows operating system partition as
default:
In Windows, log in as administrator.
Open a command prompt, and enter the command:
diskpart
At the Diskpart prompt, enter the commands:
select disk 0
select part 2
active
exit
Then close the window and restart. The system should boot into
Windows.
Troubleshooting the MBR and boot sectors
To
reinstall the QNX MBR (if you are imaging OS's):
Using the QNX boot loader will allow
you to choose which OS to boot. If you aren't presented an option
on which partition to boot from (assuming this is dual-boot system),
then this is what you need to do.
Boot from the QNX installation CD.
Choose the option to boot from the hard drive.
Log in as root, open a terminal window, and enter the command:
fdisk /dev/hd0 loader
Reboot, and you should now be able to boot from different
partitions.
To
reinstall the QNX boot sector (or secondary loader):
Now that we
can boot different partitions, you might need to reinstall the boot
sector for the QNX partition. When you choose the QNX partition
from the primary boot loader, and it writes a bunch of "........" to the screen, your
boot sector is corrupt.
Boot from the QNX installation CD.
Choose the option to boot from the hard drive.
Log in as root, and open a terminal window.
Use the command df to check the device name your QNX partition has been
assigned (i.e. /dev/hd0t79).
Run the command dloader to
see what secondary loaders are available (i.e. pc2).
Using the information gathered from above, issue the following command:
dloader /dev/hd0t79 pc2
QNX should now be bootable.