Of course you can boot from USB devices, but the OS your booting from has to
support this as well, Windows out of the box does not.

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"Timothy Daniels" <NoSpam@SpamMeNot.com> wrote in message
news:%23MTjSLlyIHA.6096@TK2MSFTNGP06.phx.gbl...
> Using the Dell Optiplex 755, which lists an eSATA controller and
> bootability from "USB devices", I called Dell Technical Support,
> and Dwayne in Florida consulted with Senior Technical Support.
> And the aswer on whether one can boot from eSATA and external
> USB hard drives was "Yes to both questions". I'm still not convinced
> one way or the other regarding USB hard drives (USB flash drives
> are certainly a "Yes"), but at least that's the word from Dell.
>
> *TimDaniels*
>
> "dencandy" wrote:
>> Here's a question I've been asked twice in the last few days & I don't
>> know
>> the answer: Can Windows be installed on & run from an external
>> removeable
>> medium such as an external hard disk or flash/pen drive?
>> If no, why not?
>> If yes, what problems can be expected?
>> --
>> Dennis (Mr Virtuality)
>
>