[SOLVED] Install Debian Jessie alongside CentOS 7 on a Sony Vaio

Ztcoracat · 11-29-2014, 05:43 PM

I just finished burning Debian Jessie to a DVD+R; the md5sum signature's were good but before I start the installation I have a few questions.

I already have CentOS installed on this Vaio and have 250.49 GB free because I deleted the Win's 7 partitions that came with this laptop. This laptop is a 64-bit Intel i5 machine.

Code:

   Device Boot      Start         End      Blocks   Id  System
/dev/sda4       525324288   976773167   225724440    5  Extended
/dev/sda5       525326336   526350335      512000   83  Linux
/dev/sda6       526352384   976773119   225210368   8e  Linux LVM

Disk /dev/mapper/cl-root: 53.7 GB, 53687091200 bytes, 104857600 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/mapper/cl-swap: 6325 MB, 6325010432 bytes, 12353536 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/mapper/cl-home: 170.6 GB, 170599120896 bytes, 333201408 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes

If upon the first boot after installing Debian I don't see my CentOS 7 partitions in the Grub Menu...how do I add them?

BTW, I tried yum update-grub in the past and it didn't work:-

Code:

[root@localhost ]# update-grub
bash: update-grub: command not found...
[root@localhost ]#

I'd like to be prepared before the Debian installation so that I am able to boot this machine w/o any surprises.

Thanks in advance:-

EDDY1 · 11-29-2014, 05:50 PM

Is windows still listed in you grub menu at boot?
If it is then use the post below to see if it removes windows entry.
Take a look at the last post.
http://unix.stackexchange.com/questi...centos-systems

Ztcoracat · 11-29-2014, 06:19 PM

Quote:

Originally Posted by EDDY1

Is windows still listed in you grub menu at boot?
If it is then use the post below to see if it removes windows entry.
Take a look at the last post.
http://unix.stackexchange.com/questi...centos-systems

No, Window's is not listed in my Grub Menu:-

EDDY1 · 11-29-2014, 06:33 PM

When I had problems with update-grub finding another os I mounted it's / then update-grub was able to find it.
Don't forget when you install debian use "Advanced Options>>Expert Install"

Ztcoracat · 11-29-2014, 07:04 PM

What mnt command would I use to mnt the CentOS root/boot partition?
I see on the man page that there is more than one -flag to use.
I've never had to mnt like that:-

I'm looking here to try to understand:
http://linux.die.net/man/8/mount

EDDY1 · 11-29-2014, 07:17 PM

I usually just mount from my file manager.
But if you mount from command line it doesn't have to be rw it can be ro so long as it's mounted

Ztcoracat · 11-29-2014, 07:23 PM

Quote:

Originally Posted by EDDY1

I usually just mount from my file manager.
But if you mount from command line it doesn't have to be rw it can be ro so long as it's mounted

Ok, so if the first boot after the install takes me to the Debian os than I would just mnt the Centos os from Debian and than run "apt-get update-grub"?

Ztcoracat · 11-30-2014, 12:06 AM

The installation was a complete sucess!

Debian Jessie is exceptionally nice; I'm happy-

Upon the first boot my CentOs partition was in the GNU Grub Menu.

I have the Debian DVD and the CentOS DVD if I have any trouble booting either os.

I'm going to reboot go to Centos and reboot back into Debian to ensure everything on this machine is right:-

Thanks for your help EDDY1.

Ztcoracat · 11-30-2014, 12:38 AM

I was able to boot into my CentOS but for some reason I do not have the Network Manager and I did have it before my fresh install of Debian.

-:-I'm guessing I'll have to manually install the network mgr-:-

Anyone: know why the Network Manager disappeared?

k3lt01 · 11-30-2014, 01:11 AM

It is highly unlikely, unless you overwrote CentOS which you didn't, that Debian has done anything to your CentOS install.

EDDY1 · 11-30-2014, 01:18 AM

Whipe in CentOS do

Quote:

dhclient eth0

Or l

Quote:

dhclient wlan0

Ztcoracat · 11-30-2014, 02:28 AM

Quote:

Originally Posted by k3lt01

It is highly unlikely, unless you overwrote CentOS which you didn't, that Debian has done anything to your CentOS install.

Your right; it wasn't Debian that hosed my Network Manager:-

Ztcoracat · 11-30-2014, 02:40 AM

Quote:

Originally Posted by EDDY1

Whipe in CentOS do

Or l

After running dhclient wlan0 the termianl returned:

Code:

Can't create /var/run/dhclient.pid:permission denied
Cannot find device "wlan0"

EDDY1 · 11-30-2014, 08:04 AM

rfkill list

widget · 11-30-2014, 02:10 PM

It has been a while but there are 2 things that you should try in relation to your "update-grub" problem;
A>

Code:

grub-mkconfig

B>

Code:

update-grub2

RH branch uses a bit different commands due to their initial resistence to grub-pc in favor of grub-legacy.

grub-mkconfig is actually the command that, by original design, that is supposed to do that job and I believe it is fully impimentted in all grub-pc versions out there now.

update-grub2 was used by, if I remember right, Fedora 17. Also did work in Magea 2 with grub-pc.