10-14
System maintenance switches
Use the system maintenance switch if you forget HDM username, HDM password, or BIOS
password, or need to restore default BIOS settings, as described in Table 10-8. T
o identify the
location of the switch, see Figure 10-13.
Table 10
-8 System maintenance switch
Item Description Remarks
Switch 1
• OFF (default)—HDM login requires
the username and password of a
valid HDM user account.
• ON—HDM login requires the default
username and password.
For security purposes, turn off the switch after
you complete tasks with the default username
and password as a best practice.
Switch 5
• OFF (default)—Normal server
startup.
• ON—Restores the default BIOS
settings.
To restore the default BIOS settings, turn on
the switch and then start the server. The
default BIOS settings will be restored. Before
the next server startup, power off the server
and then turn off the switch to perform a
normal server startup.
Switch 6
• OFF (default)—Normal server
startup.
• ON—Clears all passwords from the
BIOS at server startup.
To clear all passwords from the BIOS, turn on
the switch and then start the server. All the
passwords will be cleared from the BIOS.
Before the next server startup, turn off the
switch to perform a normal server startup.
Switches 2, 3,
4, 7, and 8
Reserved. N/A
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