However, in Mac thanks to its linux support there is a very powerful (read: extremely dangerous) utility called “dd” which copies data byte by byte rather than how most copy operations work “file by file.” Our backup is in a “file by file” format.
If you naively try to restore this file, Disk Utility will fail and show the following error about an “Could not restore – Invalid Argument.” I tried many free demos of NTFS utilities to try to format a drive, etc – none of the free solutions worked. Here is the trick – pay attention! The dmg backup file that you generated cannot be directly restored by Disk Utility on the new machine. Right click on the partition and select “Image From …” and save this file to anywhere on your mac. The size of your backup will be identical to the partition capacity (not used) – so plan ahead! You will want to take an image of your BOOTCAMP partition. You will need enough space to backup all the files so double check you have enough disk space in the location you plan to save this backup. First, open up Disk Utility in your original Mac with a Boot Camp partition. I tested this process on macOS Sierra 10.12.3. I do not wish to be held responsible for any loss and, while this procedure worked for me, I never claim to be an expert at anything unless I am getting paid. We will use open source and other utilities already installed on your mac – dd, hdiutil, and Disk Utility.
#Check for space on mac for bootcamp windows 10#
If you want to move your Windows 10 Boot Camp partition from one Mac to another, or simply to make a backup, then I hope this guide will help you! Please start by taking backups of all your data – both Mac and your Windows installation – and store these backups some place safe while you work.
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