Visit Jeremy's Blog.
Go Back > Forums > Linux Forums > Linux - Newbie
User Name
Linux - Newbie This Linux forum is for members that are new to Linux.
Just starting out and have a question? If it is not in the man pages or the how-to's this is the place!


  Search this Thread
Old 09-05-2011, 05:05 PM   #1
A Future Pilot
LQ Newbie
Registered: Sep 2011
Posts: 4

Rep: Reputation: Disabled
Booting Multiple Linux LiveCD's From USB

OK, here's the problem:

I'm using the Ultimate Boot CD, and I've added a bunch of customized .iso's to it. Now the problem is I can boot into those .iso files fine, but most of them are mini-versions of linux that are designed to run off of a CD. The issue is, when they try to boot, they try to run off of the CD (Which obviously isn't there since they're on a USB drive) and then either freeze, or give an error, or don't work in some other way.

Is there any way to edit the .iso files to tell them they're booting off of a USB drive? I'm assuming there'd be something somewhere in the boot configuration files inside the .iso files to do this. Where would that be? I would think it'd be different for different ones, but are there some places that are standard for LiveCD's? And what would I have to change?


EDIT: Just to make exactly what I'm asking clear...I know there's stuff all over the place on how to boot a .iso from USB. That's not the problem, I can already do that. What I'm wondering is how to make the OS stored in the .iso realize that it's booting from USB and not CD?

Last edited by A Future Pilot; 09-05-2011 at 05:42 PM.
Old 09-05-2011, 05:38 PM   #2
LQ Guru
Registered: Jan 2005
Location: USA and Italy
Distribution: Debian testing/sid; OpenSuSE; Fedora; Mint
Posts: 5,513

Rep: Reputation: 1000Reputation: 1000Reputation: 1000Reputation: 1000Reputation: 1000Reputation: 1000Reputation: 1000Reputation: 1000
After the image is loaded, the USB drive should be mounted as /mnt/sdax, where x is a small number.


ls /dev/sd*
look at the exact designation of the USB drive, say sdb4. Check where it's mounted
mount | grep sdb4
if it isn't mounted, mount it and mount rw:
mkdir /mnt/sdb4 && mount /dev/sdb4 /mnt/sdb4 && mount -remount,rw /mnt/sdb4
Now you should be able to write.
Old 09-06-2011, 12:00 PM   #3
A Future Pilot
LQ Newbie
Registered: Sep 2011
Posts: 4

Original Poster
Rep: Reputation: Disabled
The problem is I'm booting from the USB drive. So the actual LiveCD is expecting to be booted off of a CD. I can't even get to a terminal, because the OS can't fully boot, because it's trying to read off of the CD. What tells the LiveCD that it's on a CD and how could I change it to tell it it's on a USB?

I've heard stuff about that it?
Old 09-06-2011, 05:13 PM   #4
LQ Guru
Registered: Apr 2008
Distribution: PCLinux, Slackware
Posts: 8,150

Rep: Reputation: 1624Reputation: 1624Reputation: 1624Reputation: 1624Reputation: 1624Reputation: 1624Reputation: 1624Reputation: 1624Reputation: 1624Reputation: 1624Reputation: 1624
Are you using a USB hard drive or a flash drive?
Do you have just the iso files of each system on the drive?
Did you loop mount the iso image and then copy its files to the USB?
Which bootloader are you using to try to boot them and how are you doing it?
Which operating systems are you using?

Last edited by yancek; 09-06-2011 at 05:32 PM.


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Problem booting Puppy Linux livecd Ragnarok Warrior Linux - Laptop and Netbook 11 02-15-2012 10:06 PM
Grub help: Booting multiple images from a USB stick? Darkhands Linux - Newbie 1 12-27-2010 09:52 AM
livecd-tools created usb flash disk not booting prabhatsoni Linux - Software 3 11-05-2010 06:21 AM
booting multiple partitions on usb v1nsai Linux - Software 14 05-11-2009 09:42 PM
Booting Ubuntu LiveCD from USB Stick using GRUB as the bootloader retrovertigo Ubuntu 0 08-30-2008 10:45 PM > Forums > Linux Forums > Linux - Newbie

All times are GMT -5. The time now is 11:40 AM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration