09-10-2013
Debian Grub 1.99 alters BIOS (confirmed after formatting hard disk)
Hi, I am a long time Windows user and recently try this Debian Wheezy OS. Burn Debian ISO in Windows environment and then select DVD ROM drive to boot first in BIOS.
The first installation of Debian (GNOME) was with multi-boot option that allows booting from hard disk and DVD drive. I then realise my BIOS was altered when the ACER Phoenix BIOS F2 button fails to response but there is the F12 button to select a unique multi-boot environment. I was then able to boot to FreeDOS to install a DOS environment which I then use to load a CD containing DOS BIOS which I then use to flash the ACER provided BIOS. My ACER Phoenix BIOS was restored. I still don't think Debian OS installation can actually alter my BIOS.
The second installallation of Debian (KDE) was only with hard disk booting option. I use ReFIND, hoping to boot to CentOS DVD but the Anaconda boot to command line interface and I don't know what to do do initiate the CentOS disc installation. I then use Live GParted to partition and format the hard disk, hoping the Grub 1.99 will be removed and my original BIOS restored. When I reboot, my BIOS F2 continue not to work with no multi-boot selection (F12) and then the BIOS shows "Operating System not found".
Is the BIOS altered to BIOS-UEFI?
what can I do now? Use my other computer to:-
Try to boot USB operating system?
Try to boot USB Grub?
Try to boot Phoenix Crisis (WINCRIS.exe)?
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LEARN ABOUT FREEBSD
boot.config
BOOT.CONFIG(5) BSD File Formats Manual BOOT.CONFIG(5)
NAME
boot.config -- Configuration file for the boot blocks
DESCRIPTION
The boot.config file contains options for the FreeBSD boot block code.
When the FreeBSD boot loader runs, it searches the ``a'' slice of the boot partition for a boot.config file (as a result, slices which are
missing an ``a'' partition require user intervention during the boot process). If the boot.config file is found, its contents are used as
the default configuration options for the boot block code and are echoed to the system console.
A valid format of this file is to put BIOS drive number, a controller type, a unit number, a partition, a kernel file name, and any other
valid boot(8) option on a single line, as it is done at the ``boot:'' prompt.
The options related to the boot image selection described below and all the other options available for boot.config are documented in detail
in the boot(8) manual page.
FILES
/boot.config parameters for the boot blocks (optional)
EXAMPLES
The command:
# echo "-P" > /boot.config
will activate the serial console of FreeBSD.
The command:
# echo "1:ad(1,a)/boot/loader" > /boot.config
will instruct the second stage of boot(8) on the first disk to boot with the third boot(8) stage from the second disk.
The command:
# echo "1:ad(1,a)/boot/loader -P" > /boot.config
will do both of the above.
SEE ALSO
boot(8), loader(8)
AUTHORS
This manual page was written by Daniel Gerzo <danger@FreeBSD.org>.
BSD
May 13, 2007 BSD