The focus of this document is on the process of migrating an existing Windows 10 Boot Camp partition from the internal drive to a bootable external drive using Winclone 7.
Winclone is probably the simplest and most reliable way to create a backup for your Windows Boot Camp partition. Just clone the partition — complete with all its settings and content — and you. Launch Winclone. If both Macs are on the network, the Source Mac should appear in the Sources column. Click on the Source Mac to select. If you need to create a Boot Camp partition, please see the help document 'Creating a Boot Camp Partition'.
If you are restoring a Winclone 6 image on a Mac that does not currently have a Boot Camp partition, you can use Disk Utility on macOS to create one. First, open Disk Utility in your Utilities folder (located in your Application Folder). Select the Disk as shown above, and click the partition button. Features: Clone Windows 7 (64-bit only) or 8.1 with ease. Clone to your Boot Camp partition either on a separate drive or on the same that contains your OS X partition. Creates image documents that can be stored on any media and double-clicked to open in Winclone. Verbose logging so you know what is going on. Built on the open source ntfstools.
In order to move your Bootcamp partition from your Mac to an external drive, it must meet the following requirements:
All procedures outlined have been tested on Windows 10 1803 (October Update).
The following Mac models were tested with the procedure:
The following external USB-C hard drives where used:
Both external SSD were connected via a USB-C to USB-C cable, or USB-C to USB-A depending on ports available on the Mac.
Before migrating Windows 10 Boot Camp to a bootable external drive, the drive must be formatted with the GUID partition scheme and partitioned with an ExFAT partition. Keep in mind that this process will erase all existing data on the external drive, so make sure to back up any critical data elsewhere before proceeding.
Attach the external drive and open Disk Utility in the Utilities folder.
Select the external drive in the left side column. At the bottom of the Disk Utility window will be information about the disk. If the Partition Map is already set as “GUID Partition Table” you may skip to the section below “Add Partition.”
Under the view menu in Disk Utility, select “Show All Devices”
THIS WILL ERASE THE ENTIRE SELECTED DISK! Click Erase if you are sure.
After the disk has a GUID Partition table, you can leave it as a single ExFAT partition or add other partitions. If the external drive has a Mac (HFS+) partition, you can use Disk Utility to create a ExFAT partition from some of the free space from the Mac partition. To do so:
The partition on the external drive was created as ExFAT because Disk Utility cannot natively create NTFS formatted partitions. Winclone can select destinations as ExFAT and will overwrite the ExFAT format during the migration and the result will be an NTFS formatted Windows file system.
To successfully migrate the Boot Camp partition from the internal volume to an external volume, it is recommended that you prepare Windows with Sysprep prior to booting to the migrated copy of Windows on the external drive. Since Sysprep can fail and leave the Windows install in an unknown state, it is also recommended that you create a Winclone image of the Windows install on the internal partition prior to running Sysprep. Alternatively, you can run Sysprep after restore from the external volume in a Virtual Machine such as VMWare Fusion.
To run Sysprep on the internal volume, see this article.
Once the partition has been created in Disk Utility, quit out of Disk Utility. Verify that the newly created partition is visible as a mounted volume on the Mac desktop. Open Winclone and select Volume to Volume Cloning. Select the following options:
If you get a error message about a block size mismatch, create a Winclone image and then restore the image to the external volume. See the articles below for creating and restoring a Winclone image:
If you did not run Sysprep prior to creating the image, you can run Sysprep in a Virtual Machine such as VMWare Fusion. See the article here.
Once the migration process is complete, restart while holding the Option key and the new external Boot Camp volume will be available for startup.
External booting was verified by the following process: