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Old 04-11-2010, 08:48 PM   #1
tbear1973
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why else might we need to use a boot manager in Linux


why else might we need to use a boot manager in Linux? Any help would be greatly appreciated.
 
Old 04-11-2010, 09:04 PM   #2
modprob
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HI. I'm not sure i understand your question. Are you talking about a bootloader?
 
Old 04-11-2010, 09:26 PM   #3
Star_Gazer
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Quote:
Originally Posted by tbear1973 View Post
why else might we need to use a boot manager in Linux? Any help would be greatly appreciated.
There may be times you would rather boot into what is generally termed as "safe mode", and I think there is also a hidden menu entry that makes the linux boot to a swap file, not sure.

Then some people have more than one Linux Distro they use, plus, some people have other OSes beside Linux on their computers they wish to boot into, for various purposes and/or desires.

Regards,
Clifton
 
Old 04-11-2010, 09:30 PM   #4
damgar
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Back to school came early this weekend?
 
Old 04-11-2010, 09:34 PM   #5
cola
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Quote:
Originally Posted by tbear1973 View Post
why else might we need to use a boot manager in Linux? Any help would be greatly appreciated.
Are you talking about bootloader(grub/lilo)?
Bootloader is needed to boot one operating system from multiple operating system.
http://en.wikipedia.org/wiki/GNU_GRUB
 
Old 04-11-2010, 09:43 PM   #6
TB0ne
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Quote:
Originally Posted by tbear1973 View Post
why else might we need to use a boot manager in Linux? Any help would be greatly appreciated.
Maybe to get your system to boot???

And don't just post homework questions....I'm sure this is covered in your textbooks, or in class.
 
Old 04-11-2010, 10:14 PM   #7
tbear1973
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Smile Thanks

Thanks for the help, I have what I need. Yes I am in school, this was a secondary question that was completely voluntary to answer. I did not ask this question so that I may use the answer to reply to my school but to use for my own personal benefit. Knowledge is power and I want to be very well armed when it comes time in my life to need this knowledge. So again let me thank all who have helped me improve my knowledge base. Thanks!
 
Old 04-11-2010, 10:28 PM   #8
fbsduser
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Bootloaders allow you to select among multiple OS's. And also allow you to have bootable utilities that you can boot from without needing to juggle multiple floppies/CD's/USB's.
 
Old 04-12-2010, 04:13 AM   #9
knudfl
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All OS have a boot loader. Is just so that in windows
( and Mac ) the default time out is set to zero,
not letting you watch the options.

I think it is <some-function-key> + F8,
that takes you to the boot loader in e.g. xp.
( Haven't used windows for years.)
 
Old 04-12-2010, 08:21 AM   #10
Star_Gazer
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Quote:
Originally Posted by knudfl View Post
All OS have a boot loader. Is just so that in windows
( and Mac ) the default time out is set to zero,
not letting you watch the options.

I think it is <some-function-key> + F8,
that takes you to the boot loader in e.g. xp.
( Haven't used windows for years.)
You bring up a good point for tbear1973, because if it Linux Distro allows him to see the bootmenu timeout to 0, then tbear1973's boot menu could be bypassed. For my system, it is in the file:
/boot/grub/menu.lst
and there is the "timeout" word with a number (for seconds) after it.
timeout 8
(wait 8 seconds before automatically booting into the default selection if no other keyaction is taken).

For tbear1973:
Code:
~ $ sudo cat /boot/grub/menu.lst
...
# Configure custom boot parameters for updated kernels in /etc/sysconfig/bootloader

default 0
timeout 8
##YaST - generic_mbr
##YaST - activate

###Don't change this comment - YaST2 identifier: Original name: linux###
title openSUSE 11.2
    root (hd0,4)
    kernel /boot/vmlinuz-2.6.31.12-0.2-default root=/dev/... showopts vga=0x318
    initrd /boot/initrd-2.6.31.12-0.2-default
Regards,
Clifton
 
  


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