diff --git a/README.adoc b/README.adoc
index c275bf8..9be6319 100644
--- a/README.adoc
+++ b/README.adoc
@@ -128,8 +128,9 @@ macOS Boot Disk Usage:
   2. Reboot the machine.
   3. Hold down the OPTION key before the Apple logo appears.
   4. Select the USB boot disk from the menu.
-  5. Use Disk Utility to format the machine's drive as "APFS (Encrypted)".
-  6. Install the new operating system.
+  5. Use Disk Utility to delete and/or erase the hard drive including associated partitions.
+  6. Use Disk Utility to create a single "APFS" drive as a "GUID Partition Table".
+  7. Install the new operating system.
 
 macOS Reinstall:
   1. Click the Apple icon from the operating system main menu.
diff --git a/bin/create_boot_disk b/bin/create_boot_disk
index 453ed04..159df2b 100755
--- a/bin/create_boot_disk
+++ b/bin/create_boot_disk
@@ -11,8 +11,9 @@ printf "  1. Insert the USB boot disk into the machine to be upgraded.\n"
 printf "  2. Reboot the machine.\n"
 printf "  3. Hold down the OPTION key before the Apple logo appears.\n"
 printf "  4. Select the USB boot disk from the menu.\n"
-printf "  5. Use Disk Utility to format the machine's drive as \"APFS (Encrypted)\".\n"
-printf "  6. Install the new operating system.\n"
+printf "  5. Use Disk Utility to delete and/or erase the hard drive including associated partitions.\n"
+printf "  6. Use Disk Utility to create a single \"APFS\" drive as a \"GUID Partition Table\".\n"
+printf "  7. Install the new operating system.\n"
 printf "\nmacOS Reinstall:\n"
 printf "  1. Click the Apple icon from the operating system main menu.\n"
 printf "  2. Select the \"Restart...\" menu option.\n"