2843 Views 4 Replies Latest reply: Sep 25, 2009 3:49 PM by The hatter
by design courtesy of Microsoft Windows is not meant to be installed on external devices (harddisks or USB-sticks).
Apple just strictly accepts this rule.
However, there are solutions to be found on the internet for installing Windows XP and/or Vista onto external devices, so it might only be a matter of time before a solution for W7 is out.
The rules are in the BIOS and motherboard, not in Windows per se. Some boards like Intel's own DX58SO has two SATA ports on the motherboard that are treated same as any internal SATA port.
Like the ODD ports on some Mac Pro models that OS X uses.
But we don't have the luxury of what our BIOS does or does not offer or support.
From my days using ThinkPads (long, long ago) I remember doing flash updates to the BIOS. The updates came from IBM, not Microsoft (so I assume the BIOS was hardware-based, not software (i.e. Windows o/s) based.
That suggests (to me, anyway!) that something in the Mac motherboard prevents installing Windows on an external drive (but allows OSX to be so-installed).
I've also read the Macs use "open firmware" instead of BIOS and that open firmware is, to some degree, programmable (as in programmable to allow Win to boot from a USB drive).
Am I on the right track or am I completely, totally, wrong?! (I'm 'way over my head here).