<div class="gmail_quote">On Thu, Aug 6, 2009 at 3:34 AM, Walter Bender <<a href="mailto:walter.bender@gmail.com">walter.bender@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> ===Sugar Digest===</blockquote><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">In the meanwhile, we need to: experiment with more USB manufacturers; be more careful about characterizing the different failure modes; do some workflow experiments to see if we can minimize failures; try different file formats; and come up with simple and robust backup/restore mechanism so that we can end run failures. Greg Dekoenigsberg has suggested we take advantage of Fedora Test Days] to put a more rigorous analysis together. But we need a testing plan which means we need to first come to consensus on what it is we are trying to test. Variables include: * Which Sugar-on-a-Stick image is being tested? * What customizations have been made? * What process was used to create the key? * What size and brand of key is being tested? * What hardware the key is being tested on? * What is the nature of the failure? (no boot, corrupted data, etc.?) * What was the history of use prior to failure?</blockquote><div> </div></div>The sticks I have with SD cards have started to fail on the older computers at school (after working ok for 2 weeks of lessons). But they still work fine on my newer Dell mini inspiron. This is a very consistent pattern. I have 8 sticks with SD cards and 6 have failed on older computers but all of those 6 still work on the Dell mini inspiron. They start to boot, the xo icon appears and dots but not icons appear in the circle. This screen hangs for a while and then exits to a black screen with this message: Warning: cannot find root file system Create symlink /dev/root and then exit this shell to continue the boot sequence bash: no job control in this shell bash - 4.0# My other sticks are a mixture of Kingstons and Laser and none of these have failed. Let me know if you want more detail such as answers to all of the above questions.