Improve media disk question default

Sets on an unmounted disk partition are most likely to be on install media,
e.g. CD or USB stick.

Default 'Which disk contains the install media?' to the first disk that is
a) not the root disk and b) not a disk with softraid chunks (hosting the
root disk, for example).

This makes it point at the right disk in most setups.
All disks remain valid answers, this is only about the default.

OK afresh1

diff --git a/distrib/miniroot/install.sub b/distrib/miniroot/install.sub
index 7d445b7..5a48299 100644 (file)
--- a/distrib/miniroot/install.sub
+++ b/distrib/miniroot/install.sub
@@ -1,5 +1,5 @@
 #!/bin/ksh
-#      $OpenBSD: install.sub,v 1.1228 2023/02/16 18:10:28 kn Exp $
+#      $OpenBSD: install.sub,v 1.1229 2023/02/19 23:46:22 kn Exp $
 #
 # Copyright (c) 1997-2015 Todd Miller, Theo de Raadt, Ken Westerback
 # Copyright (c) 2015, Robert Peichaer <rpe@openbsd.org>
@@ -2034,7 +2034,7 @@ install_disk() {
        if ! ask_yn "Is the disk partition already mounted?" yes; then
                ask_which "disk" "contains the $MODE media" \
                        '$(bsort $(get_dkdevs))' \
-                       '$(bsort $(rmel $ROOTDISK $(get_dkdevs)))'
+                       '$(get_dkdevs_uninitialized)'
                [[ $resp == done ]] && return 1
 
                # Ensure the device file exists and mount the fs on /mnt2.