---
name: "tpm_setownable"
section: "8"
platform: "linux"
package: "tpm-tools"
version: "1.3.9.2-0.2"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/tpm_setownable"
---

# tpm\_setownable(8)

change whether the TPM allows tpm\_takeownership operations

TPM Management - tpm\_setownable

## NAME

tpm\_setownable - change whether the TPM allows tpm\_takeownership operations

## SYNOPSIS

**tpm\_setownable** \[**OPTION**\]

## DESCRIPTION

**tpm\_setownable** reports the status of the TPM's flags regarding if the TPM can be owned.  This is the default behavior and also accessible via the **--status** option. Requesting a report of this status prompts for the owner password.  The **--allow** option sets the system's TPM to allow tpm\_takeownership operations   (via the TPM\_SetOwnerInstall API).  This operation requires physical presence.  The **--prevent**  option (via the TPM\_SetOwnerInstall API) prevents the TPM from accepting tpm\_takeownership operations.  This operation requires physical presence.  These operations are persistent.  tpm\_takeownership requires the tpm be enabled.

- **-h**, **--help**

  Display command usage info.

- **-v**, **--version**

  Display command version info.

- **-l**, **--log** \[none\|error\|info\|debug\]

  Set logging level.

- **-u**, **--unicode**

  Use TSS UNICODE encoding for passwords to comply with applications using TSS popup boxes

- **-s**, **--status**

  Report the status of flags regarding if the TPM can be owned.

- **-a**, **--allow**

  Allow tpm\_takeownership operations.

- **-p**, **--prevent**

  Prevent tpm\_takeownership operations.

- **-z**, **--well-known**

  Authenticate using 20 bytes of zeros as owner password (the default TSS Well Known Secret), instead of prompting for an owner password.

## SEE ALSO

[**tpm\_version**(1)](/tpm_version/1.md), [**tpm\_takeownership**(8)](/tpm_takeownership/8.md), [**tpm\_setpresence**(8)](/tpm_setpresence/8.md), [**tpm\_setenable**(8)](/tpm_setenable/8.md), [**tcsd**(8)](/tcsd/8.md)

## REPORTING BUGS

Report bugs to \<trousers-users@lists.sourceforge.net\>