Thanks for bring my attention and glad to know that the MOD will work with 480gb drives too, though I am not expecting the half battery life, we are really hitting a hardware limit here because of the high peak current draw of mSATA drive. On average my crucial m500 240GB and adapter only draws 250mA during disk activities, ie, database initialization.
I did enable the UDMA4 & 80MHZ boosting in the patch, it actually improves battery life even on normal 30GB HDD ipod, the extra power consumption by the CPU boosting is much less compare to the energy spend on longer disk I/O poll & disk idling on a slower CPU clock.
I considering myself lucky in being able to tune a few thing for the iPod ata driver to make it work. However, I did that without having any documentation about the portal player 502x chip, ie. register settings about the timing, so pretty much I was just guessing while I was working on it. Wondering if anyone still have the portal player datasheet from the old day?