/usr/share/initramfs-tools/conf-hooks.d
NameSizeModeActions
busybox-initramfs400644editdlrm
cryptsetup2210644editdlrm
overlayroot200644editdlrm
Edit: /usr/share/initramfs-tools/conf-hooks.d/cryptsetup (221B)
# This will setup non-us keyboards in early userspace, # necessary for punching in passphrases. KEYMAP=y # force busybox on initramfs BUSYBOX=y # and for systems using plymouth instead, use the new option FRAMEBUFFER=y