[Trisquel-users] Problems creating USB installed using Trisquel 7

[strypey]

I recently downloaded a fresh copy of Uruk-2.0-beta-2, and checked the  
SHA256. Then I tried to use a recently installed and fully updated Trisquel  
7, running on my Aspire One, to make a USB installer. I tried it with both  
Disks (using 'restore image') and Startup Disk Creator, but neither  
successfully booted. The installer created using Disks just said "Missing  
operating system", then went to a normal boot for the internal drive. The  
installer created using Startup Disk Creator spat out an error message, then  
a 'boot:' prompt, then repeated this until I used the power button to shut  
the PC down.

Last time I created a USB installer to test beta2, I used Disks on my LMDE  
laptop, which worked fine. Anyone got any idea what might have gone wrong?