Lenovo ThinkPad Helix 20CG User Manual page 96

Table 2. Security menu items (continued)
Menu item
Security Chip
UEFI BIOS Update
Option
88
ThinkPad Helix User Guide
Submenu item
Set Minimum Length
Power-On Password
-Password Status
Hard Disk 1 Password
-Password Status
Security Chip Selection
Security Chip
Security Chip
Clear Security Chip
Physical Presence for
Clear
Flash BIOS Updating by
End-Users
Secure RollBack
Prevention
Value Comments
POST 0199 error and proceed without
any user action needed.
• Disabled Specify a minimum length for
power-on passwords and hard disk
• x characters
passwords. If you set the supervisor
(4≤x≤12)
password and specify a minimum
length for passwords, no one but you
can change the length.
• Enter
See "Power-on password" on page
75.
• Disabled
• Enabled
• Enter See "Hard disk passwords" on page
77.
• Disabled
• Enabled
• Intel PTT Configure the security chip. This
option is available only on models
• Discrete TPM
that have both the firmware TPM and
the discrete TPM.
• Enabled If Security Chip is set to Intel PTT.
Enable or disable security chip
• Disabled
feature.
• Active
If Security Chip is set to Discrete
TPM. Enable or disable security chip
• Inactive
feature.
• Disabled
• Enter
Clear the encryption key.
Note: This item is displayed only
if you have selected On for the
Security Chip option.
• On This option enables or disables the
confirmation message when you
• Off
clear the security chip.
• On If you select On, all users can update
the UEFI BIOS. If you select Off, only
• Off
the person who knows the supervisor
password can update the UEFI BIOS.
• On If you select Off, you can flash to the
previous version of UEFI BIOS. If you
• Off
select On, you can not flash to the
previous version of UEFI BIOS.