/dev/sr0 problem on USB

**zwygart** · December 4th, 2009

Hi every body,

I install liveCD on USB by copying the content and booting from GRUB.

Jaunty worked well,
I installed Karmic alpha, beta and stable release, all of them made a error during boot about /dev/sr0 being not present
Recently I had to reinstall Jaunty, now he drops me at a shell after a long wait time during boot.

Also I tried out Lucid, it make the same thing as karmic, this is probably a bug, how to fix it? or will it be fixed?

Thanks for help

**gibbylinks** · December 17th, 2009

I get same error on Lucid Daily Live when making USB with

USB Startup Disk Creator
Create DELL recovery media
Unetbootin

All the above packages give me this same error when using them and the ISO to create a live USB.

**gibbylinks** · December 19th, 2009

No one any ideas. I want to test Lucid.

I tried it before the alpha with no problems but since the alpha I can't boot. I've tried several "daily's" with this same error each time

To clarify I am getting the following error when booting from the USB stick

/init: line 7: can't open /dev/sr0: No medium found

Doesn't seem to matter how write to the stick as above post

**Gina** · December 20th, 2009

Originally Posted by gibbylinks

To clarify I am getting the following error when booting from the USB stick

/init: line 7: can't open /dev/sr0: No medium found

Doesn't seem to matter how write to the stick as above post

I'm getting the same. AMD64 machine.

**gibbylinks** · December 24th, 2009

Still same problem on latest daily

**dino99** · December 27th, 2009

have you sent a bug report ? can't find one.

what return: fdisk with your usb device; how have you format it (which OS, which settings)

**sparker256** · December 27th, 2009

Originally Posted by gibbylinks

No one any ideas. I want to test Lucid.

I tried it before the alpha with no problems but since the alpha I can't boot. I've tried several "daily's" with this same error each time

To clarify I am getting the following error when booting from the USB stick

/init: line 7: can't open /dev/sr0: No medium found

Doesn't seem to matter how write to the stick as above post

I have just booted using my usb thumb drive with todays daily build made with USB Startup Disk Creator. I get the same errors you are seeing but it still boots. I am running nvidia so I get a dialog box to that it must be run in low res. After answering that I get a login box that you cannot find the right password for. I found this in the Lucid Lynx Testing and Discussion forum.

I waited until the login screen appeared, then switched using "ctrl+alt+f1" to a new screen.
after that it was

Code:

sudo useradd -d /home/username -m username
sudo passwd username
sudo adduser username admin

I switched back to "ctrl+alt+f8" and was able to login and start the installer program which is under "system->administration"

What I did find is that because it is a thumb drive if you reboot after that it will take you the login screen and all you have to do then is enter your password.

Hope this helps Bill