Before you say already answered, I've looked through all the similar questions and I'm afraid they don't explain the solutions clearly enough - either that or the suggested coding isn't recognised when I type it in.
My problem is that I get the "no caching mode page found" and " assuming drive cache: write through" messages, when I try and boot of an 8Gb USB drive with a Ubuntu Iso on it.
As with other posters, when I initially created the USB drive, it worked fine, but it has suddenly stopped doing so.
I've spent about 4 or 5 hours trawling this and other sites for answers and solutions. I've tried the ones that I've understood, but they either don't work or the code suggested isn't recognised.
Any ideas please?