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11 Configuring server boot options on 14th generation Dell EMC PowerEdge servers
When enabled, a “Generic USB” entry will be placed in the UEFI Boot Sequence. When BIOS is iterating
through the boot sequence and detects this option, it will attempt to boot the first external or iDRAC virtual
USB device in the UEFI Boot Sequence.
By default, the USB Boot placeholder feature is disabled and can be changed with the following BIOS
Attribute. It is available only in UEFI Boot Mode.
Generic USB Boot settings
3.3 BIOS Boot Sequence
The legacy BIOS Boot Sequence consists two lists:
 A parent list containing boot options for every legacy device in the system and a child list.
 The hard drive list, which defines the boot order of hard drives. For hard drives, only one entry is
added to the hard drive list per storage controller (for example, one entry per PERC).
3.4 BIOS Sequence Retry
The PowerEdge BIOS provides the option to retry boot operations. The Boot Sequence Retry attribute
controls if BIOS reattempts the Boot Sequence after every 30 seconds. The primary use case is to support
reattempting a PXE boot if the PXE server was not initially available. Boot Sequence Retry is enabled by
default.
BIOS Sequence Retry settings
Name
Programmatic Name
Attribute
Boot Sequence Retry
BootSeqRetry
Possible Values
- Enabled
- Disabled
- Enabled
- Disabled
3.5 Changing Boot Sequence
After the Boot sequence is established, changes in operational processes might necessitate changing the
order in which a boot operation is attempted. There are two sets of BIOS Attributes that can be used modify
the boot sequence.
3.5.1 Boot Sequence Attributes
The BIOS Boot Sequence can be altered by using the BIOS User Interface or one of the programmable
interfaces. Using the BIOS User Interface, on the System Setup page (click F2 when the company logo is
displayed during boot), select Boot Settings  UEFI Boot Settings to view the list of boot devices. Select
Name
Programmatic Name
Attribute
Generic USB Boot
GenericUsbBoot
Possible Values
- Disabled
- Enabled
- Disabled
- Enabled