I'm the proud owner of a Lenovo W520 which is equipped with an eSATA (eSATAp actually) port. However I'd like to attach an external eSATA drive to it, install Win7 on this external drive and boot from it.
On the internet there are on one hand lots of resources stating that it's not possible to install win7 on USB/Firewire disks (although some workarounds for XP exist). The only source which sounds more or less hopeful is http://answers.microsoft.com/en-us/windows/forum/windows_7-windows_install/can-i-install-windows-7-64-bit-on-external-esata/e08dd9e5-a4f4-47d5-afc3-a0325ad045ac )
Some Lenovo forum stats the BIOS would support booting from eSATA (ref http://forums.lenovo.com/t5/W-Series-ThinkPad-Laptops/W510-W520-can-they-boot-from-Esata/td-p/550335 ). However there they do not explicitly mention Windows like operating systems.
Hence my question, do any of you guys/girls have a either a working setup with a win7 installed on an eSATA(p) port ? Or do you have an explanation why booting from eSATA(p) might not work ? (read: how is the eSATAp electrically interfaced with the remainder of the system ?)