> Does the laptop actually have 80 wire cables - did you see UDMA100 > actually being used. If so can you send me an lspci -vxx and a dmesg. > Probably we need to add it to the list of devices using short 40 wire > cable tricks I have been using UDMA5/ATA100 for months, although this was set by a hdparm init.d script. Disabling the script, performing a cold reset and booting into a 2.6.21 kernel with the old ATA system enabled, hdparm -i indicated the HD was using UDMA5. I'm assuming that this means the old drivers do not limit to ATA33 unless there is a better I can check this. I removed the laptop's hard drive. It fits into a cradle which is inserted into the laptop. There is no form of cable or adapter that is placed on the HD's connector. It just plugs directly into a socket inside the laptop when the cradle is inserted. I hope this is enough information. I've included the output of dmesg and lspci -vxx. Francis