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1. #Guid partition map or master boot record for use in both windows and mac how to
2. #Guid partition map or master boot record for use in both windows and mac install
3. #Guid partition map or master boot record for use in both windows and mac windows 10

#Guid partition map or master boot record for use in both windows and mac install

Reformat the whole SSD and install macOS with Clover bootloader.

Boot the external drive and use Paragon disk manager to make a backup image (vdmk) of previously created Win partition on SSD.ĥ. This is the moment when external bootable Windows HDD comes in handy. After completing all steps you'll have fully working Windows on SSD GPT partition and bootable USB flash with small MBR partition (the only way to boot SSD GPT).Ĥ. While in Windows, convert system MBR partition to GPT from CMD using Gptgen tool and create bootable MBR usb.

#Guid partition map or master boot record for use in both windows and mac windows 10

Install Windows 10 on previously created NTFS partition using Windows bootable USB (created by Rufus or Windows media creation tool).ģ. Reformat SSD using MBR and create single and the only NTFS partition.Ģ. You'll also need Paragon Hard Disk Manager installed on this system.ġ. Separated external/internal HDD/SSD with Windows 7 or newer installed. For people with laptops, SD card may also do the trick and its more convenient because it doesn't require much space.ĥ. I've used old, unused 1gb flash which was sitting in a drawer for at least a decade. Empty USB flash memory (1gb minimum) to spare and use it every time when you need to boot Windows. Windows 7, 8, 8.1 or 10 bootable USB installation on flash memory (created by Rufus or Windows media creation tool).Ĥ.

Minimum recommended size is 250gb, but 128gb would also work (if you're willing to install programs somewhere else)ģ. SSD drive for macOS and Win (guess a regular HDD may also do the job, but I haven't tried). This wasn't necessary, but it made things a lot easier, since I was able to make a backup images during the installation process and combine them at the end to make everything works.ġ. To make this procedure as easy as possible, I've been using external bootable hdd with Windows 7 and Paragon Hard Disk Manager installed.

If I wan't to boot Win10, I have to press F8 (Asus mobos specific) during bios initialization to call for "Choose bootable device" menu and select USB flash memory (it's sticked in all the time). Since SSD is set as first bootable device, I've disabled Clover menu screen, so to boot macOS, all I have to do is to turn on computer and wait for macOS to boot. The only downside of this is that you have to use USB flash memory or SD card with bootable MBR partition to start Windows.Īnyway, at the end, I've managed to have both macOS and Win10 installed at the same SSD with GPT partitions.

#Guid partition map or master boot record for use in both windows and mac how to

There's a detail procedure on how to convert partition with Windows (from Windows itself) from MBR to GPT using small tool called Gptgen. Windows 7,8,8.1 or 10 CAN be booted from GPT partition and it works perfectly and absolutely the same as if you have UEFI bios. as it usually turns out, there's a method to avoid this pointless restriction. The main obstacle was installing Win 10 on GPT partition since this is officially disabled by Microsoft for all older bios mobos (without uefi support). I have 500gb SSD so I wanted to split it in two equal partition and make a dualboot of High Sierra (hfs) and Windows 10. This was bothering me for a couple of days and I've finally managed to get it done. Building a CustoMac Hackintosh: Buyer's Guide