Hardware: MacBook Pro Late 2019, 16-inch i7; 16 GB RAM, 512 GB SSD , AMD Radeon 5300M
Current OS: Monterey 12.7.1, Windows 10 Build 1709 installed via Boot Camp
Expected outcome: Triple Boot
- Windows 10 Build 1709,
- Windows 10 Latest / Recent Build
EDIT: I found a solution. I currently have 3 partitions on my 512 GB SSD that has macOS, Windows 10 Build 1709, and Windows 10 21H1.
I was able to do this by first installing Windows 10 21H1 via Boot Camp as normal. Then in Disk manager, shrink about 100 GB for a new partition, and use that partition for Windows 10 Build 1709. Using a bootable USB made with Rufus, disable secure boot on macOS Recover and use the installation USB to install Windows 10 on the 3rd partition. You'll need to copy the brigadier driver to the installation USB, and in the drive select menu, load the driver selecting
AppleSSD64 driver. You will be able to see your internal drives now. After installation is complete, there will be a screen that allows you to select which Windows 10 you want. IMPORTANT NOTE: You MUST NOT install Boot Camp on the 2nd Windows 10, otherwise it'll ruin the whole setup. Just install the Windows 10 drivers manually via Device Manager.
Note: I specifically need Windows 10 Build 1709 for certain legacy programs, it's very niche but it's a requirement. The second build of Windows 10 doesn't matter as long as it's relatively recent.
Accessories I am using:
- Samsung SD Adapter for MicroSD
- Samsung Evo Select 512GB MicroSD / PNY 32GB Elite MicroSD
- Hiearcool USB C Adapter Hub
So I've been following these two guides on trying to install a second partition of Windows 10 on my MacBook Pro 2019 i7 laptop:
However, I have not had any success in getting the second Windows 10 install. I boot into the EFI BOOT selection after turning on the laptop and holding down the option key. Bootable USB drive goes to the Windows 10 installation screen, but after clicking "Install Now" the following error appears:
Windows Setup could not install one or more boot-critical drivers. To install Windows, make sure that the drivers are valid, and restart the installation.
I was able to successfully get Windows 10 Build 1709 installed via Boot Camp, but have not been able to get an additional partition made for a second installation of Windows 10.
I'd like to note that I made the Windows 10 bootable USB on the MacBook itself, following the tutorials above. I'm not sure if it's any different from making a Windows 10 bootable USB on Windows or not.
I tried two different micro SD cards and both had the same issue, so I don't think it's a micro SD card issue.
How did other people get a second installation of Windows 10 onto their machines? I don't need it to be an elegant solution, so long as there is a way to enter either one of the three operating systems. I don't mind having to reboot multiple times to reach a specific OS either.
If there are any instructions, I don't mind factory resetting the laptop either, as there isn't much data to begin with. But I for sure would like to get all three operating systems onto the machine. The MacOS version doesn't really matter, to be honest. But to reiterate, I absolutely need Windows 10 build 1709, and then some recent builds of Windows 10 as the additional OS.
Also if possible, I'd like the partition split as such: macOS 250 GB, Windows 10 Build 1709 100 GB, Windows 10 recent build 15 GB.