It's possible to boot both OS X and XP from USB-stick so I thought SATA II ExpressCard 34 would boot nice too, but it does not on my MBP. The expresscard uses the SiI3132 driver. I'm trying to get this to boot OS X, or at least XP, without success. While using the OS X install-disk 1, I see no external SATA drives, and inside OS X the disks is reported as SCSI-disks on "SCSI Parallel Domain 0". How do I make eSATA-disks to show up as selectable targets for OS X install? Since OS X installs fine on my external FW400-drive, but not allow bootcamp on it, I guess I maybe get the same problem with a eSATA drive. If so: How do I install XP on external harddrive, not USB?