Ed Covney said:
I think what LVT and DL are trying to tell you is that a
BIOS
should NEVER change the preferred boot drive no matter
what
hardware is attached. As long as the preferred, non-USB
drive
is attached it should boot to only that drive.
As you add new hardware, the BIOS should acknowledge it
but
never make chages. Period. Chances are, there's a BIOS
upgrade
available that will correct the problem.
By the way what ever compelled you to create a boot
partition on
an external USB drive? A Really BAD idea which you will
become
fully aware of in due time.
Ed
Exactly what I and others have said. I haven't figured out
how, if the bios is changed to the internal HDD as first
boot device and saved before reboot, the computer reverts to
a USB drive as its boot drive. Even if there is a boot
partition on a USB drive that, in and of itself, should have
no bearing on how a system boots. (All of my current
desktop computers can be set to have the USB boot the
computer as well as more than one installed hard drive or
CD/DVD)
I have placed many bootable drives in USB enclosures from
failed computers and never had one of them attempt to take
over the boot drive of the computers. None of my systems
have any issue with having USB drives attached when booted.
The laptop I currently am using has 3 USB drives attached
and I just rebooted it after doing some updating of the
installed programs. The primary desktop has 2 attached
through direct port connect to the system and 3 through a
powered hub. None give any issue on a reboot other than
being available when the system reboots. All are turned on
with the same power switch (I have them all hooked to a
power center that is plugged into an uninterruptable power
supply) that I use to turn on the monitor and computer.