Kovid Goyal wrote: > Yes going back to 2.6.17 does fix it. Also windows and various LiveCDs boot > without problems. > > Here is the output > smartctl -d ata -a /dev/sda > smartctl version 5.36 [i686-pc-linux-gnu] Copyright (C) 2002-6 Bruce Allen > Home page is http://smartmontools.sourceforge.net/ Thanks, I couldn't find anything indicating hardware problem from the smartctl output. Ergh... The 0xff timing out is fixed in the devel tree. The problem is why sda sometimes doesn't get detected. Can you post the result of failing dmesg? If you've got a second computer, doing netconsole (Documentation/networking/netconsole.txt) is the best way. If not, just take a picture of the screen while ata1 detection is in progress. -- tejun - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html