Hats off to you, RLoew! It actually is a SATA-300 HDD (which must work at SATA150, because of the southbridge limitation)! Here's a detailed description of the dis- and re-assembly of an Acer Aspire One AOA150 having a 120 GB HDD (a SATA one, for sure). So... RLoew's SATA patch will be needed, besides (and, in fact, on top) od LLXX's modded ESDI_506.PDR. There's no avoiding it. Great . Where can I find this patch, and how much is it.