I'm using a laptop which has eSATA connection. I would like to install Windows 7 on the external disk (to have it completely separated from the OS on the internal hdd). According to the manufacturer, booting from eSATA drive won't be possible. I've checked the BIOS settings and it appears to be correct - eSATA is not even listed in the boot sequence. I'm wondering if there can be any workaround to that limitation, for example starting a custom bootloader on the USB pendrive, just to boot Windows 7 on the eSATA drive.