add "boot from cd" to grub

03-30-2007	#1 (permalink)
valemon Linux Engineer Join Date: Oct 2006 Location: Volos Posts: 918	add "boot from cd" to grub Can I add to grub a boot from cd option in order not to change it from BIOS from time time? __________________ Linux is like a Teepee, No Windows, No Gates, Only Apache Inside! Arch/Moblin Linux user #442041

03-31-2007	#2 (permalink)
devils casper Super Moderator Join Date: Jun 2006 Location: Chandigarh, India Posts: 22,142	its possible to add this option in GRUB but it creates problems in a few machines coz GRUB's functions depends on BIOS too. first of all, set first boot device to CD Drive in BIOS. dont insert any CD in CD Drive and power on machine. does it ask for CD or transfer control to Second Boot device (Harddisk) ? __________________ It takes a lot of time to be a genius, you have to sit around so much doing nothing, really doing nothing. - Gertrude Stein New Users: Read This First

03-31-2007	#3 (permalink)
valemon Linux Engineer Join Date: Oct 2006 Location: Volos Posts: 918	it doesn't ask for cd andboots from the second boot device __________________ Linux is like a Teepee, No Windows, No Gates, Only Apache Inside! Arch/Moblin Linux user #442041

03-31-2007	#4 (permalink)
devils casper Super Moderator Join Date: Jun 2006 Location: Chandigarh, India Posts: 22,142	in that case, you dont need to add an entry for CD in GRUB. insert any CD, Machine will check if its bootable or not. if its not, machine will pass control to Second Boot Device and if CD is bootable, machine will boot from it. anyways, you can add this code in menu.lst Code: title Boot from CD chainloader (hd2)+1 add this code in /boot/grub/device.map file Code: (hd2) /dev/hdc __________________ It takes a lot of time to be a genius, you have to sit around so much doing nothing, really doing nothing. - Gertrude Stein New Users: Read This First

03-31-2007

#5 (permalink)

valemon

Linux Engineer

Join Date: Oct 2006

Location: Volos

Posts: 918

Just did it, rebooted and this is the output:

Quote:

chainloader (hd2)+1
error 21: Selected disk does not exist
press any key to continue...

__________________
Linux is like a Teepee, No Windows, No Gates, Only Apache Inside!
Arch/Moblin
Linux user #442041

03-31-2007	#6 (permalink)
devils casper Super Moderator Join Date: Jun 2006 Location: Chandigarh, India Posts: 22,142	did you add entry in device.map file? post the contents of /etc/fstab file. __________________ It takes a lot of time to be a genius, you have to sit around so much doing nothing, really doing nothing. - Gertrude Stein New Users: Read This First

03-31-2007

#7 (permalink)

valemon

Linux Engineer

Join Date: Oct 2006

Location: Volos

Posts: 918

Yes, I added the line.
device.map:

Quote:

/dev/hda5 / ext3 acl,user_xattr 1 1
/dev/hda6 /home ext3 acl,user_xattr 1 2
/dev/hda1 /windows/C ntfs ro,users,gid=users,umask=0002,nls=utf8 0 0
/dev/hda2 swap swap defaults 0 0
proc /proc proc defaults 0 0
sysfs /sys sysfs noauto 0 0
debugfs /sys/kernel/debug debugfs noauto 0 0
usbfs /proc/bus/usb usbfs noauto 0 0
devpts /dev/pts devpts mode=0620,gid=5 0 0
/dev/fd0 /media/floppy auto noauto,user,sync 0 0

__________________
Linux is like a Teepee, No Windows, No Gates, Only Apache Inside!
Arch/Moblin
Linux user #442041

03-31-2007	#8 (permalink)
devils casper Super Moderator Join Date: Jun 2006 Location: Chandigarh, India Posts: 22,142	post the contents of device.map file too. Code: less /boot/grub/device.map __________________ It takes a lot of time to be a genius, you have to sit around so much doing nothing, really doing nothing. - Gertrude Stein New Users: Read This First

03-31-2007

#9 (permalink)

valemon

Linux Engineer

Join Date: Oct 2006

Location: Volos

Posts: 918

Quote:

(fd0) /dev/fd0
(hd0) /dev/hda
(hd2) /dev/hdc

That's all in there

__________________
Linux is like a Teepee, No Windows, No Gates, Only Apache Inside!
Arch/Moblin
Linux user #442041

03-31-2007	#10 (permalink)
devils casper Super Moderator Join Date: Jun 2006 Location: Chandigarh, India Posts: 22,142	everything is correct. it should work. which distro do you have? i have to check this in my machine. i will post back soon. __________________ It takes a lot of time to be a genius, you have to sit around so much doing nothing, really doing nothing. - Gertrude Stein New Users: Read This First