Add sysinstall(8) tip for selecting devices in disked(8).

sysinstall/devices.c

@@ -186,6 +186,11 @@ bool check_lacking_partition_table(void)
 	return false;
 }
 
+bool check_multiple_harddisks(void)
+{
+	return 2 <= hds_count;
+}
+
 bool fsck(struct filesystem* fs)
 {
 	const char* bdev_path = path_of_blockdevice(fs->bdev);

sysinstall/devices.h

@@ -43,6 +43,7 @@ void scan_devices(void);
 struct filesystem* search_for_filesystem_by_uuid(const unsigned char* uuid);
 struct filesystem* search_for_filesystem_by_spec(const char* spec);
 bool check_lacking_partition_table(void);
+bool check_multiple_harddisks(void);
 bool fsck(struct filesystem* fs);
 void free_mountpoints(struct mountpoint* mnts, size_t mnts_count);
 bool load_mountpoints(const char* fstab_path,

sysinstall/sysinstall.c

@@ -665,14 +665,19 @@ int main(void)
 	const char* mktable_tip = "";
 	if ( check_lacking_partition_table() )
 		mktable_tip = "Type mktable to make a new partition table. ";
+	const char* devices_tip = "";
+	if ( check_multiple_harddisks() )
+		devices_tip = "Type devices to list the devices. "
+		              "Type device 1 to switch to device 1. ";
 	textf("Type ls to list partitions on the device. "
+	      "%s"
 	      "%s"
 	      "Type mkpart to make a new partition. "
 	      "Type mount 2 / to create a mountpoint for partition 2. "
 	      "Type exit when done. "
 	      "There is partitioning advice in installation(7). "
 	      "Type man 8 disked to display the disked(8) man page.\n",
-	      mktable_tip);
+	      mktable_tip, devices_tip);
 	struct filesystem* root_filesystem = NULL;
 	struct filesystem* boot_filesystem = NULL;
 	struct filesystem* bootloader_filesystem = NULL;