live .iso 's on pen drive won't start – /dev/loop0 is an invalid root device

gan01

Hi,
I've tried to run several antivirus live systems by creating a bootable pen drive each:

Bitdefender rescue cd
Kaspersky rescue disk
Norton Bootable Recovery Tool
Avira AntiVir Rescue System

created with

Unetbootin
Startup Disk Creator (on ubuntu)
Disks (on ubuntu)
Rufus (on windows)
Stickifier (on windows)

Most of them didn't boot at all.

Bitdefender returns the following errors:

/dev/loop0 is an invalid root device..
Could not find the root block device in .

As well as:

Attempting to mount media /dev/sda2
[...] EXT4-fs (sda2): Unrecognized mount option "uit=1000" or missing value
[...] EXT4-fs (sda2): Unrecognized mount option "uit=1000" or missing value
[...] EXT4-fs (sda2): Unrecognized mount option "uit=1000" or missing value
[...] EXT4-fs (sda2): mounted filesystem with ordered data mode. Opts: (null)
Skipping /dev/sda2 (marker '/mnt/cdrom///rescure/livecd/squashfs' does not exist)

Unfortunately, I'm not experienced enough to interpret these errors, except it seems the problem is related to the filesystem.

Sidenotes:

My main mission is to run a virus free Windows, along with ubuntu, mainly in order to run Adobe software.
Other live systems such as ubuntu and Clonezilla worked fine.
Thanks to ClamTK (!), I've been able to scan the Windows partition. Still, I would like to fix above problem and run a second scanner.
Finally, I'm asking here, because both part of my filesystems and the live-usb "recovery" tools seem to be linux based.

Can anybody point at steps that might help complete booting these live systems?

tdsgit

These steps work for me
https://github.com/tdsgit/codesamples/blob/master/unetbootin.sh