Dell PowerEdge 7250 - Manual (Page 83)

Terminal Mode Commands 81
Boot flags
(semi-volatile) 5 Data 1
[7] - 1b = Boot flags valid. The bit should be set to indicate that
valid flag data is present. This bit may be automatically cleared
based on the boot flag valid bit clearing parameter.
[6:0] - Reserved
BIOS support for the following flags is optional. If a given flag is
supported, it must cause the specified function to occur in order
for the implementation to be considered to be in conformity with
this specification.
The following parameters represent temporary overrides of the
BIOS default settings. BIOS should only use these parameters for
the single boot where these flags were set. If the bit is 0b, BIOS
should use its default configuration for the given option.
Data 2
[7]—1b = CMOS clear.
[6]—1b = Lock Keyboard.
[5:2] - Boot device selector.
0000b = No override.
0001b = Force PXE.
0010b = Force boot from default Hard-drive.
0011b = Force boot from default Hard-drive, request Safe Mode.
0100b = Force boot from default Diagnostic Partition.
0101b = Force boot from default CD/DVD.
0110b–1110b = Reserved.
1111b = Force boot from diskette/primary removable media.
[1]—1b = Screen Blank.
[0]—1b = Lock out Reset buttons.
Table C-5. Boot Option Parameters (continued)
Parameter Number Parameter Data (non-volatile unless otherwise noted)