How would one go about customizing the LUKS passphrase prompt when decrypting drive at system startup? I am on 16.04. Have looked into /lib/cryptsetup/cryptdisks.functions. Have also checked Plymouth. I cannot locate the output source. Grep isn't helping either. I have scoured the web and have not seen any viable solutions other than recompiling from source.

  • It is in the initrd – Panther Aug 5 '18 at 23:57

Yes it is, Panther. Found it in the initrd.img. /scripts/local-top/cryptroot . Thank you.

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