Ubuntu – Trying different flavors of Ubuntu from a USB drive

dual-bootkubuntulive-usbxubuntu

Is it possible to have a dual boot of different Ubuntu versions? X K L M E U Since only 1 gig of space is recommended you should be able to have 8 possible version on a 16 gig flash drive. Cause I really hate the scroll scroll bars in the Unity version and want to see which system I Like best XFCE, KDE, Fluxbox custom(is what my friend uses), etc.

Currently I have made 3 boot up drives all one USB drive which means erasing and reinstalling every time.
Cheers,,

Best Answer

There's "MultiSystem – Create a MultiBoot USB from Linux" The main page is in French so look here: http://www.pendrivelinux.com/multiboot-create-a-multiboot-usb-from-linux/

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Ubuntu – Instruct Ubuntu to boot to RAM from flash drive using unetbootin

I hit tab and replaced quiet splash with toram. Do not use TORAM=yes, just use toram. This worked for both Ubuntu and Mint, although some versions of Mint needed toram -- toram. Hope this helps as I am doing some modifications along these lines.

Example of my modded syslinux.cfg:

initrd=/ubninit file=/cdrom/preseed/linuxmint.seed boot=casper toram --

You may add whatever other flags between toram and --, but keep in mind some may crash your system.

Ubuntu – Unable to boot Ubuntu Live USB Flash Drive with casper-rw persistent partition

As mentioned in the previous comment, this is related to the bug https://bugs.launchpad.net/ubuntu/+source/casper/+bug/1489855 "the sequence of mounting changed from root partition then persistent partition (15.04) to 1st persistent then root partition (16.04) for whatever reason."

There is a work around recently updated in the thread for the bug, which I will elaborate on below as the other thread doesn't seem to have as much visibility (comes up lower in the google search when I was trying to work it out).

Create partitions casper-rw and OS
Use universal USB installer, etc to set up the OS partition with casper-rw file large enough to be able to make changes - needed for later step to workaround bug (I did it with 2gb, but surely it requires less)
Boot up with the new USB. Open /usr/share/initramfs-tools/scripts/casper with root to edit (sudo). Change the function setup_unionfs() to the following : https://launchpadlibrarian.net/258626969/casper%20function.txt
sudo update-initramfs -u (Had to uninstall cryptsetup to do this)
Copy the generated initrd.img file from /boot to another location.
From another OS, delete the casper-rw file in the USB. Copy the initrd.img back to the live partition and change menu item to use the newly built initrd.img.

The next time you boot up from USB, it should now bootup from the casper-rw partition.

This worked for me for 16.04 after a long frustrating time searching for the solution!

Best Answer

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