Hide/observe TPM
TPM is enabled by default to encrypt data transfer for system operation. Optionally, you can disable TPM using Unified Extensible Firmware Interface (UEFI) or Lenovo XClarity Essentials OneCLI.
Using UEFI
For details, see Hide TPM from OS
in UEFI User Guide at UEFI manual for ThinkSystem server.
Using Lenovo XClarity Essentials OneCLI
To disable TPM, do the following:
Download and install Lenovo XClarity Essentials OneCLI.
To download Lenovo XClarity Essentials OneCLI, go to the following site:
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: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:
![](enable_tpm.png)
![](enable_tpm.png)
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