Resolved: initramfs - Unable to find a medium containing a live file system

Hi
I want to share a problem and a possible solution (at least it worked for me):

Installing trisquel 7 on a old PC, I received always the same message:

initramfs - Unable to find a medium containing a live file system

It happened even installing from a live USB memory, and from a DVD (drive was set as slave on first SATA channel).
After some searches, I found that on some systems the DVD drive set as slave could give problems.

I moved the DVD drive cable from SATA2 to SATA3 connector on mainboard (master on secondary channel) and now it works.
Up to now no solution for USB memory stck.

Davide