Dec 15, 2018 Written instructions found here: I hope this video was helpful.
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- May 15, 2020 There is a large part of user hope to partition hard disk for dual boot. They have benefited from the SSD and want to get more from this disk. As mentioned before, SSDs come with large capacity recently, which makes OS dual boot on SSD possible. For user who has upgraded Windows 7 to Windows 10, dual boot is a good way to back to familiar OS.
- Jun 28, 2020 Both of the boot managers available to use can handle the dual-booting process; they can even handle more than two OSes, but the Mac's boot manager won’t recognize the Ubuntu OS without a bit of fiddling, and the GRUB boot manager isn't particularly easy to use.
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Home > Resources > Dual Boot Windows 10 & macOS without Erasing Windows
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A dual boot Windows PC containing Windows 10 and macOS is not that hard to create. Fondly called a Hackintosh, such a setup allows you to enjoy the best of both operating systems on a single computer, hence the phrase dual boot. One of the biggest reasons that people want to create Hackintoshes is that they have the freedom to choose from two different desktop app sources. On a dual boot, you can enjoy popular Windows applications from the Microsoft Store as well as the best nuggets from the Mac App Store - all on a single computer.
The easiest way to do this is to get a Windows 10 PC and then partition the drive so you can install macOS on that partition. Each OS requires its own partition or its own drive. In this article, we'll show you how to create a partition and install the Mac operating system alongside the existing copy of Windows 10 on your PC.
Currently this tutorial is applied to macOS Mojave and High Serria, Mac OS X Serria, EI Capitan and Yosemite
Preparations before Making a Dual Bootable (Win 10 & macOS) PC
There are a few things to keep in mind at this point. First, you don't need a secondary drive to do this. The shared drive method of dual booting will work just fine as long as you have enough space on the disk for an additional partition for your copy of macOS.
The second requirement is that the disk needS to be already partitioned as GUID Partition Table, or GPT. Otherwise, you will need to first delete Windows, install macOS after formatting the disk, and then install Windows 10 at the end. The reason Windows 10 comes last is that certain errors might occur if you try installing Windows first.
P.S if the current OS is not Windows 10, then you have to create a bootable Windows 10 USB and install it on the computer first.
Third, you will need to create a macOS USB installer before attempting the dual boot. You can do this on a Mac by getting the installation files via the App Store and then burning the DMG file inside to a USB drive using Disk Utility app.
Dual Boot Windows 10 and Mac OS on PC without Erasing Windows
Dual Boot Pc With Mac Os
To start off, you will need a disk partition utility to help you allocate the required space. A free tool like MiniTool Partition Wizard Free Edition is more than adequate. Once you have the software, follow the steps shown below.
Step 1: Launch MiniTool Partition Wizard and look for the EFI system partition. If not EFI partion found, then create a new partition with GPT.
Step 2: If the EFI partition is less than 200MB, you will need to expand it by taking space from the partition before or after it. This is usually the case when the disk is formatted for Windows, which only allocates 100MB for the EFI partition. You can right-click on the partition to resize it.
Step 3: Now right-click on the new partition and select Split to create a new partition for the macOS installation. The size can be specified on this page. Click OK to apply the changes.
Step 4: The next step is to format this partition. To do this, right-click on the macOS partition and select Format. Set the file system to FAT32 and confirm by clicking OK.
Step 5: You will now need to boot your PC from the macOS USB installer. In Windows, you can do this by hitting the F2 during the startup process. This takes you to the BIOS Setup Utility, where you can change the boot priority so the computer boots from your macOS USB installer instead of the existing Windows files. Once the PC boots up from the installer, open Disk Utility from Applications >Utilities. Select the partition inside Disk Utility and hit Erase. Set the format to APFS (macOS High Serria and Mojave) or Mac OS Extended (journaled) for OS X 10.12 and below. After that, click the Erase button to start the partition process.
Step 6: The next thing is to merge the EFI folders from Windows EFI boot drive and the USB installer, and for this, you can use an EFI mounter like Clover Configurator. The purpose of this step is so that your macOS can boot from the partition instead of from the USB installer.
Step 7: Restart Windows 10 PC and boot from macOS install USB. Follow the prompt to start the macOS installation process.
Step 8: There's still one more step required to make sure the dual-booting works, and that is to modify one single file so that both partitions are visible as boot sources. This is important because, otherwise, you will have to boot to macOS from the installer each time, which is a complex and unnecessary task. The steps in the image below show you how it's done:
Step 9 : The final step, which is optional, will make your computer boot into Clover instead of Windows. This allows you to choose which OS to boot into, and it's a very convenient thing to set up. You can also do this when your drive name fails to show up despite following Step 6. See the steps shown in the image below.
The process is now complete. When you restart your PC, you will see two boot options in the Clover interface - one for Windows and one for macOS. Select the OS you want to work on and resume the boot process. You will need to restart to access the other OS, which is a minor inconvenience, but that's a trade-off you're going to have to be willing to make if you want a dual boot computer with both Windows 10 and macOS.
Another way is to use separate drives so each OS has its own drive and own EFI system partition. This can be done when your original Windows drive is not formatted for GPT. If it is, then you can follow the steps described in this article to do a dual-boot on a shared drive.
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A dual boot installation alongside Windows is one of the best ways to try a new operating system, whether it is a newer version of Windows or a Linux distribution. With dual boot, every time we start the PC, we will get to choose which OS we want to load. However, before we begin a dual boot installation, it's a good idea to prepare Windows, to make sure the installation goes without a hitch.
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Table of Contents
- How to prepare Windows for partitioning
- Disable Fast Startup (Windows 8.1 and Windows 10 only)
Create a full Windows backup
Dual boot installations are usually safe, but any work with partitions runs the risk that something could go wrong. That could potentially mean losing our original Windows installation, along with all the files and programs.
So, it's best to do a full Windows backup, as a precaution, using AOMEI Backupper or a similar imaging software.
This way, should anything go wrong during the dual boot installation, we can restore the original Windows in just a few minutes, with all the files, programs, and settings at the time of the backup.
For the full procedure, step by step, check our detailed guide:
How to prepare Windows for partitioning
Unless we have a second hard drive to install the new operating system, we need to shrink the Windows partition for a dual boot installation, to make space for the new OS's partition or partitions.
Before we shrink the Windows partition, we must make sure there are no file system errors, and it is also a good idea to defrag our drive.
Prepare Windows 8.1 / Windows 10
Dual Boot Pc With Mac Os Using 2 Drives 2
On Windows 8.1 and Windows 10, we just need to right-click on the hard drive and select 'Properties'...
On the 'Tools' tab, we first run the 'Error checking' app.
Even if Windows claims we don't need to check a drive, we should do a scan, as a precaution.
The scan should only take a few seconds. If it takes longer than that, it means that the file system had more serious problems than Windows realized.
After a successful scan, and only if we have an HDD drive, it's a good idea to do a full optimization and defragmentation from the Tools tab.
The optimization feature is not available for Solid-State Drive (SSD) disks.
Prepare Windows 7
The choices to prepare Windows 7 are the same as in Windows 8.1 and Windows 10, but the names are slightly different.
So, again we right-click the drive we are interested in, and select 'Properties'.
We run the 'Error-checking' app on the 'Tools' tab.
![Dual boot pc with mac os Dual boot pc with mac os](/uploads/1/2/6/0/126023939/758621684.jpg)
The first option, 'Automatically fix file system errors is enough. The second option will scan the whole disk surface; for large disks, it can take hours.
Windows 8.1 and Windows 10 can do the scan live, but Windows 7 need to schedule the scan for the system partition.
On next reboot, the scan will take a few seconds, usually less than half a minute.
After that, we go back to the 'Tools' and select Defragmentation.
Windows 7 allows us to defragment an SSD, but we really shouldn't. Defragmentation has no advantages for SSD drives, and it does a lot of unnecessary writes, which shorten the disk's lifespan.
Partitioning
If we want to install a newer version of Windows on dual boot, such as Windows 10 Technical Preview, Windows installation won't allow us to shrink the current Windows partition, to make space for the new OS. We need to do it manually on our current version of Windows.
It's different with Linux distributions since most of them support automatic resizing of the Windows partition during the installation. Still, it's always safer to handle NTFS from within Windows. After all, Linux support of NTFS isn't exactly official, and some distributions don't support NTFS at all during the installation.
To create the partitions we need, we just press the Windows key + R and type:
On the disk management console, we right-click on the partition of our choice, and select 'Shrink Volume'.
For most Linux distributions, 15GB of space is more than enough for a dual boot configuration. So on the 'Enter the amount of space to shrink' we select 15*1024=15360MB.
To dual boot a newer version of Windows, we should give at least 50GB(51200MB) for a basic installation. Of course, it depends on how many programs we intend to install on the second OS.
For a Linux installation, it is also a good idea to create the three main Linux partitions: root '/', '/home', and swap, which is the equivalent of Virtual Memory in Windows.
So, we right-click the unallocated space, select 'New Simple Volume'...
...and give 10240MB (10GB) for root '/'.
We don't need to assign a drive letter or drive path. After all, it will be formatted to a Linux-only file system, such as Ext4, and Windows won't be able to read it anymore.
We also don't need to format the volume.
We repeat the procedure to create partitions for /home, where 4096MB is enough, and Swap, which will take the slightly less than 1GB left.
The last two partitions are of a different color because they are extended partitions, not primary. A disk with MBR partition style supports only four primary partitions, but up to 99 extended.
If we shrunk the Windows partition more than 15GB, we should give root '/' 10-15GB, swap 1-2GB, and the rest to the '/home' partition, which will contain all the files and application settings for every user.
Disable Fast Startup (Windows 8.1 and Windows 10 only)
Have you noticed that Windows 8.1 and Windows 10 have a lower boot time than Windows 7, on the same PC? This happens because of the fast startup.
When we shut down the newer versions of Windows, part of the system is hibernated, with specific system data written from the RAM to the hard drive.
The next time we boot Windows, the hibernated data is restored to RAM, shaving off a few seconds as opposed to cold boot.
The Fast Startup feature might be a smart idea to lower boot time, but it can create problems on dual boot. It could lead to data loss in Windows. So, we should disable it, just to be on the safe side.
How to disable Fast Start in Windows 8.1
To disable this feature in Windows 8.1, we just need to go to the start screen, and search for 'Power Options'.
There, we click on 'Choose what the power buttons do'.
To unlock the setting, we click on 'Change settings that are currently unavailable'...
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and then we can uncheck the 'Turn on fast startup'.
How to disable Fast Start in Windows 10
Windows 10 have messed up with the system options, by having some options at the settings screen, some at the control panel, and some on both.
The fastest way to disable Fast Start is right-clicking on the start menu button, and selecting 'Power options'.
From there, we click on the 'Additional power settings' link.
After that, the procedure is identical to the one on Windows 8.1. We click on the 'Choose what the power button does' link...
To unlock the setting, we click on 'Change settings that are currently unavailable'...
and then we can uncheck the 'Turn on fast startup'.
I can't find the 'fast startup' option
Some systems with Windows 8.1 or Windows 10 will not have the fast startup option at all.
Those systems don't support fast startup, so there is no need to disable it.
Now, we are ready to install the other OS in dual boot
Whether it is Windows 10 Creators Update, an insider track of Windows, Ubuntu, Elementary OS, or any other Linux distribution, once we prepare Windows for the dual boot installation, there is a much lower chance that something could go wrong.
After having prepared our Windows installation for dual boot, downloading and created an installation medium for our second OS - be it Linux or Windows, it's just a matter of changing the boot order and beginning the new installation.
If you have any questions regarding dual boot or had any trouble with your installation, let us know in the comments below.
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