Posts: 324
Threads: 15
Joined: Mar 2010
Reputation:
21
Your case is very interesting. It's because usually the BIOS hides (and we do unlock) hidden options for south bridge SATA ports. But yours (US15W, Intel Poulsbo) has none, only IDE.
SATA is implemented (well, not sure in your case but found a similar netbook) via PCI-E to SATA bridge. If you find out what's exactly the name of yours (either by making a photo near HDD or having a look at device manager), you might find out whether your bridge supports AHCI at all. If the answer's "no", we won't be able to help you. If it's "yes", then it's a puzzle interesting enough to dig deeper.