Last night I successfully got my U100 to boot from a Toshiba 240GB 1.8" HDD (MK2431GAH). Fitted internally! It's a different drive to normal, and in so many places they tell you it won't work with a standard laptop. It doesn't have a 512byte physical sector size, it's actually 4kb. Windows XP isn't capable of handling that yet, although the rumours are that Windows 7 will.
There seems to be sufficient room for it to replace the standard drive, although you do need to take into account the ZIF adapter as the 240GB drive is ZIF only.
I'm using a custom linux build based on Linux From Scratch, so for the time being i've swapped drives back again now that I know it works. A bit of time building out this Linux build and then i'll get around to swapping them permanently..
Nick.
