Dell OptiPlex E1 - Manual (Page 17)

NOTE: The User 1 and User 2 drive types can be used for both the Primary and Secondary Drive 0 and Drive 1
categories. However, if you select the User 1 or User 2 drive type, you may not obtain optimum hard-disk drive
performance. Also, the User 1 and User 2 drive types cannot be used for hard-disk drives greater than 528 megabytes
(MB) in capacity.
Hard-Disk Drive Sequence
The Hard-disk Drive Sequence lists installed adapter cards and devices in the order they will be initialized. The first hard-disk drive
in the list becomes the bootable drive C.
Boot Sequence
Boot Sequence enables you to set the order of the devices from which the system attempts to boot.
The term boot refers to the system's start-up procedure. When turned on, the system "bootstraps" itself into an operational state by
loading into memory a small program, which in turn loads the necessary operating system. Boot Sequence tells the system where
to look for the files that it needs to load.
To set the boot device order, press to access the field's pop-up options menu. Use the up- and down-arrow keys to move
through the list of devices. Press to enable or disable a device (enabled devices appear with a check mark). Press <+> or
<-> to move a selected device up and down the list. The following sections detail typical devices.
Diskette Drive A:
Selecting Diskette Drive A: as the first device causes the system to try booting from drive A first. If the system finds a diskette that
is not bootable in the drive or finds a problem with the drive itself, it displays an error message. If it does not find a diskette in the
drive, the system tries to boot from the next device in the boot sequence list.
Hard-Disk Drive
Selecting Hard Disk Drive causes the system to attempt to boot first from the hard-disk drive and then from the next device in the
boot sequence list.
IDE CD-ROM Reader
Selecting IDE CD-ROM Reader causes the system to try booting from the CD-ROM drive first. If the system finds a CD that is not
bootable in the drive or finds a problem with the drive itself, it displays an error message. If it does not find a CD in the drive, the
system tries to boot from the next device in the boot sequence list.
Onboard NIC
Selecting Onboard NIC causes the system to try booting from the integrated network interface controller (NIC) first.
PXE
Selecting PXE (Preboot eXecution Environment) causes the system to boot from the integrated network interface controller (NIC)
first. If a boot routine is not available from the network server, the system tries to boot from the next device in the boot sequence
list.