YunQiang Su <wzssyqa@gmail.com> writes: > When ask to type root fs, type "?" in, then I got: > > cd0 > > only cd0 :( Can you post dmesg from a gnu/linux live system so that we know what hardware you have? Perhaps you are trying to boot from a USB flash drive? If this is the case then see http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=631754 which needs help.