Can't boot Live from USB - unknown fs type, can't mount root

[Roger]

You have to burn the iso to the usb stick using cd creator or what ever 
you have for the purpose, similar to how one creates a cd or dvd, not 
copy it.
I do this frequently and once the iso is on the stick it doesn't seem to 
matter what else is on it the iso still works( for me anyway). I have  
a2 gig stick that I've used this way for years.
Roger

> On Monday 21 October 2013 11:02 PM, Oliver Ruebenacker wrote:
>>
>>      Hello,
>>
>>   I downloaded Fedora 19 Live CD and copied it to a USB flash drive 
>> via dd. When I try to boot from it on a Lenovo Thinkpad T430s, I do 
>> get a screen that says that Fedora Live CD is going to load, but then 
>> it fails. The first error message I see is:
>>
>>   kernel: SQUASHFS error: unable to read id index table
>>
>>   Then, some lines later, I get several lines that say:
>>
>>   dracut-mount[361]: mount: unknown filesystem type 'DM_snapshot_cow'
>>
>>   and then:
>>
>>   dracut-mount[361]: Warning: Can't mount root file system
>>
>>   And then I seem to be in a "dracut emergency shell"
>>
>>   Any ideas? Thanks!
>>
>>      Best,
>>      Oliver
>
> if you have another FC box try following and user to create live 
> USB-stick
>
> yum install -y liveusb-creator
>
>
>
> Warm Regards
>