E64: DVD Drive Error - Dvd drive timed out during reset :Wrong firmware, dvd is without f/w chip, etc. This can also be caused by the tray not being fully closed on boot. also it could mean that the Kernel can't be launched/signature in NAND Flash chip is broken It could be possible after bad update.
http://forums.xbox-s...p;#entry4156375 This might also be caused by a bad SATA cable.
It could if the kernel is JTAG capable. Dash 7371 or lower. Manufacture date before June 2009, and you need to verify the NAND dump CB to be hackable.