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first thing is what versions of centos. if I was you if grub legacy edit the /boot/grub/menu.lst
to boot that partitions you have your distro's. if your in grub 2 then run the update on grub2 and see if it
finds your /boot/vmlinuz on the other partitions and writes it in for you. Hit and miss a lot of time.
Hey drakeo thanks for replying
Centos 6.4 i think its grub 0.93
Should i upgrade grub? Would i need to reinstall the os's?
How do you uograde grub? Will i just google it and follow some tutorial?
Also...lastly...does it matter where each distro is installed? Would they all perform equally well regardless of partition etc...i want to use debian as my desktop system for gimp etc...should that be installed somewhere specific for performance etc?
Again thanks for your reply
Last edited by sigint-ninja; 10-28-2013 at 07:11 PM.
If you have not yet installed Debian, you could select to install its Grub2 bootloader to the master boot record. It should detect CentOS as well as Slackware and create a menuentry in the grub.cfg file so all three are on the menu when you boot. If you would rather use the CentOS Grub Legacy bootloader, you would then need to install the Debian Grub to its partition.
Distribution: OpenSUSE 13.2 64bit-Gnome on ASUS U52F
The last OS installed will take over the boot loading. So go head and install Debian, once you are done with the Debian installation the other OSs will be listed on its GRUB menu from where you can select any of them with the up and down arrow keys on your keyboard.
that worked perfectly...i just installed debian and on finishing it located cent and slack...and all are booting...
slack is listed about 8 times...why i dont know...guess i can just edit the menu.lst file and remove the extra entries?
im still going to look at what the previous guy said, as it would be useful to understand exactly how this all works in case i have to troubleshoot booting problems etc? or is this not too important?
on a different note i put my /usr/home directory on a separate partition (thinking it would be smart)
but now i cant get menus on my desktop (Debian) and cant create shortcuts, seems like a permissions thing as when i tried to copy from folder to folder (shared apps to desktop) i got a permissions problem
Distribution: OpenSUSE 13.2 64bit-Gnome on ASUS U52F
Hey I am glad you were able to boot the other OSes. Sure it will be good if with time you become familiar with the booting process of your computer. But dont rush things, Linux can be overwhelming if you try to learn too much in too little time. Remember to enjoy your system as you go learning.
A common home partition is good so you can share that drive space among all your operating system but keep in mind that if you create the same user for all of them it can become really messy so perhaps creating a different user acount for each OS can be benefitial, same thing with root password, create different root password for each OS.
Heck, I would even format each root partition with a different format, except for the home partition ofcourse and sure the swap partition. so you could do something like
15GB root partition for CentOS formated perhaps in ext3
15GB root partition for SlackWare formated perhaps in ext4
15GB root partition for Debian formated perhaps in Btrfs
2 GB swap partition share among all OS
the rest of your drive for /home formated perhaps in ext4
you can move partition around after installation if you want to edit your home partition too and sure you can also edit your users accounts with 'useradd' 'userdel' commands you could also modefy your menu entries en GRUB but like I said take it easy.
If you reformat one of partition you have already created all the files in that partition will get delete so think about it if you wish to test any other format supported by Linux.
do you prefer lilo to grub 2? why?...what are the reasons?...does it really matter...
As Far as security goes lilo is the way. Pat has gone into detail why the older well thought out bootloader has not fallen to security breaches.
But as far as handling multiple machines with people that forget to run lilo after a kernel update has found them selves working to get back in.
I my self have put grub on many of the Slackware machines for my friends because they been locked out with out a boot disk. Trust me when you look at Grandma just
wanting to watch her favorite soap opera website, and could careless about lilo. At the same time she is so proud she can run slackpkg to upgrade all. grub 2 is a mess as far as I am concerned it is built for things the average person has no need for. And the security on it could be better. The more you do to a small bootloader that makes it bigger. Make your chance for things to break a little bigger .