[ 161.336142 Buffer I/O Error on device sr0, logical block 0 [ 167.071540 Buffer I/O Error on device sr0, logical block 0 [ 172.810243 Buffer I/O Error on device sr0, logical block 0 [ 176.659030 Buffer I/O Error on device sr0, logical block 0 BusyBox v.1.1.3 (debian 1:1.1.3-5ubuntu7) Built-in shell (ash) Enter 'help' for a list or Built-in commands (initramfs)