Lenovo ThinkSystem SR635 V3 - Page 207

5. Perform both OneCLI commands and XCC actions to restore the XCC settings. See OneCLI commands
that restore configuration settings
and Using XCC to restore the BMC configuration.
6. If there is a software (SW) key, for example, XCC FoD key, installed in the system, inject the key again to
ensure that the key functions properly. See
Using Lenovo Features on Demand.
Note: If you need to replace the processor board together with the firmware and RoT security module,
update the VPD before injecting the key. See
Update the Vital Product Data (VPD).
7. Optionally, do the following if needed:
• Hide TPM. See “Hide/observe TPM” on page 197.
• Update the TPM firmware. See
“Update the TPM firmware” on page 198.
• Enable UEFI Secure Boot. See
“Enable UEFI Secure Boot” on page 198.
Hide/observe TPM
TPM is enabled by default to encrypt data transfer for system operation. Optionally, you can disable TPM
using Lenovo XClarity Essentials OneCLI.
To disable TPM, do the following:
1. Download and install Lenovo XClarity Essentials OneCLI.
To download Lenovo XClarity Essentials OneCLI, go to the following site:
https://datacentersupport.lenovo.com/solutions/HT116433
2. Run the following command:
OneCli.exe config set TrustedComputingGroup.HideTPMfromOS "Yes" --imm <userid>:<password>@<ip_address>
--override
where:
• <userid>:<password> are the credentials used to access the BMC (Lenovo XClarity Controller
interface) of your server. The default user ID is USERID, and the default password is PASSW0RD
(zero, not an uppercase o)
• <ip_address> is the IP address of the BMC.
Example:
3. Reboot the system.
If you want to enable TPM again, run the following command and reboot the system:
OneCli.exe config set TrustedComputingGroup.HideTPMfromOS "No" --imm <userid>:<password>@<ip_address> --override
Example:
Chapter 5. Hardware replacement procedures 197