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-rw-r--r--install_tpm25
1 files changed, 5 insertions, 0 deletions
diff --git a/install_tpm2 b/install_tpm2
index 8d7d52c8541b..e084c41d3731 100644
--- a/install_tpm2
+++ b/install_tpm2
@@ -51,6 +51,11 @@ will be attempted with each set of banks.
The first PCR bank spec may be used to indicate a PCR to extend after
unsealing the key.
+
+If the 'tpmprompt' command line parameter is set, the user will be
+prompted for the parent encryption key password during boot. This password
+will be used while loading the sealed key. This option has no effect when
+the key is stored in NVRAM. Ex: tpmprompt=1
HELPEOF
}