In a similar vein for laptops, Veracrypt offers (offered?) a "Hidden OS" feature that allows an OS to be stored within an encrypted container inside of another encrypted container, with two separate passwords. This allows the outside volumes password to be divulged, which would show a dummy OS and allow for plausible deniability, while the real OS is only accessible with the second password.

However, this feature doesn't seem to work for Windows 11, or on some modern laptop hardware anymore?

Is there other software that offers similar functionality?