fix: use proper disk iteration

Misc/Arch-LuksCrpy-Install.bash

@@ -159,7 +159,7 @@ list_disks() {
 	count=0
 	log "info" "Available disks"
 	for disk in ${disks}; do
-        printf "%s\n" "${count}.)" "${disk}"
+		printf "%s %s\n" "${count}.)" "${disk}"
 		count=$((count + 1))
 	done
 }
@@ -194,12 +194,12 @@ install() {
 		list_disks "${available_disks}"
 		read -rp "Select a disk number to install arch linux to: " disk_selected
 
-        if "${disk_selected}" -eq "${disk_selected}" 2>/dev/null; then
-            :
-        else
+		case $disk_selected in
+		'' | *[!0-9]*)
 			log "error" "A number was not passed"
 			continue
-        fi
+			;;
+		esac
 
 		if [[ "${disk_selected}" -gt "${disk_count}" ]]; then
 			log "error" "Invalid disk number passed, received ${disk_selected}, but the maximum disk number is ${disk_count}"