View Full Version : [SOLVED] Is the alternate install CD also a "live CD"?

March 10th, 2011, 12:16 AM
Long story short - I'm looking to run a live CD so I can alter my existing 10.10 x64 installation. The standard desktop install CD results in a graphically corrupted window (a grainy grey field). The alternate install CD does get me to its text menu, but the shell I open operates on the ramdisk the install CD creates, not the existing hard drives. I can't seem to get the alternate install CD to do anything to my existing file system.

I'm using the x64 alternate install CD off a USB key.

Short story long - I'm trying to convert from ext3 which I've inherited from upgrading all the way from Warty, to ext4. I see instructions on how to do it and the best way is using a live CD, so I need to see the existing file system from the live CD via a shell.

As my 10.10 install is working just fine, I'm getting less and less inclined to mess with it at this point, so I may just abandon it. But I understand ext4 is much faster than ext3, plus I always learn a lot when I go through things like this, so this is just a question before I give up.


March 10th, 2011, 12:27 AM
The standard desktop install CDs are the liveCDs. The alternative install is a text only installer.

Often the issue is video card related. Usually liveCD works since it uses a default basic video driver to start with. On my system I had to use nomodeset with my nVidia card.

How to set NOMODESET and other kernel boot options in grub2
noapic nolapic noapci noirqpoll nosmp irqpoll
Check BIOS for settings:
try to boot with acpi=off or nomodeset=0 on the boot line

Some other settings:
* Older Intel video card: i915.modeset=1 or i915.modeset=0
* nVidia: nomodeset
* Generic: xforcevesa or nouveau.modeset=0
* Radeon: radeon.modeset=0

March 10th, 2011, 12:29 AM
No the alternate CD is not a live CD.
I am sure you have already tried this but with the live CD choosing the nomodeset boot option often avoids graphics issues.

[edit] oldfred you beat me to it. :)

March 10th, 2011, 02:42 PM
Thanks for the very quick responses. Yes, I have an nVidia card, and nomodeset worked perfectly.

There's another issue - some of my drives are in RAID using mdadm, and of course the live CD can't see those. But that's a matter for another thread.:)

March 10th, 2011, 03:25 PM
You just need to install mdadm while you are running from live CD. The live CD does not have this installed by default.

March 10th, 2011, 03:58 PM
You just need to install mdadm while you are running from live CD. The live CD does not have this installed by default.

Thanks again. I did get that far, but my mdadm.conf is on one of the mdadm-administered partitions so I'm copying it to a regular partition in order to use it.

I believe I can reassemble my mdadm partitions without doing this, but I want to be careful.

March 10th, 2011, 05:31 PM
I made a little progress but haven't got it completely yet, so I'll continue here (http://ubuntuforums.org/showthread.php?t=1704258).

I'll mark this thread as solved.

Thank you!