Bootcamp - Your Disk Could Not Be Partitioned.

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Bootcamp - Your Disk Could Not Be Partitioned.

Hello, so I have been having this problem where I want to install bootcamp (windows 10) on my Macbook but keep failing because a partition error. I searched it up and a few sources suggest I downgrade to mac os sierra, install Bootcamp then upgrade back to my current version (catalina). I don't want to downgrade the entirety of my main os just to come back again (Note: I also don't wanna lose data in the process) so is there a way to create a partition and install the downgraded version there so I can just delete it after the process or just fix it somehow.?

NOTE: If you have any suggestions on fixing the partition error without any kind of downgrading then please do tell me. I also thought of creating a manual partition then installing the Bootcamp in it but I didn't find a way to get Bootcamp to install in there.

MacBook Air 13″, macOS 10.15

Posted on Sep 30, 2020 8:06 AM

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Answer 1

BrandonTenoi Author

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Sep 30, 2020 9:06 PM in response to Loner T

Here is the result I got from the "diskutil list" command. I have a MacBook Air 13" Early 2015

NOTE: I found a way to install sierra on another partition and I tried to run bootcamp from there. It told me to select a partition so I created a seperate partition then selected it. Then it said "installer disk not found" and it didn't let me pick a iso file. (Just putting it out there in case it is helpful)

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Answer 2

BrandonTenoi Author

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Sep 30, 2020 10:14 PM in response to BrandonTenoi

Sorry to add again but another thing is that I only made partitions to check the other versions after the Bootcamp failed. When I tried the bootcamp and failed , there was only one disk with no partitions and it was my current os startup version so just saying that I had no other partitions that could cause the bootcamp assistant to fail. Only then I tried branching out. (I'm saying this because some videos I looked at suggested that there are no other partitions when using bootcamp)

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Answer 3

BrandonTenoi Author

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Sep 30, 2020 11:03 PM in response to TheLittles

Thank you for the suggestion, but I fear the performance wouldn't be as good. Most of the reasons I am trying to install windows 10 is because of games. They usually aren't compatible with mac os. I have once installed windows 10 successfully on this device (while on mac os sierra/I am now on catalina), but that was a couple of years ago and I also had to delete it to restore my mac. With all that said, I will look into it.

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Answer 4

BrandonTenoi Author

Level 1

5 points

Oct 1, 2020 12:05 AM in response to BrandonTenoi

Thank you all for giving suggestions on how to fix this... :) I finally got it to work. Turns out that some apps running in the background were using the disk that was supposed to be partitioned and so bootcamp couldn't. I ran bootcamp again but with every single app I could find closed and it worked!

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Answer 5

TheLittles

Level 10

203,019 points

Sep 30, 2020 10:54 PM in response to BrandonTenoi

BrandonTenovur Said:

"Bootcamp - Your Disk Could Not Be Partitioned.: [...]is there a way to create a partition and install the downgraded version there so I can just delete it after the process or just fix it somehow.?"

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Run Windows Through a Virtual Machine:

If there ends up being not solution for this, consider using a Virtual Machine(VM) for running Windows (Windows-in-a-window).

You would open items in it, and use Windows-only compatible software on it.

All would be accessed and would operate as desired on the VM.

Virtual Machine applications include VMWare Fusion and Parallels. Learn more here: What Is a Virtual Machine? - VMWare Support.

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Answer 6

TheLittles

Level 10

203,019 points

Sep 30, 2020 11:16 PM in response to BrandonTenoi

BrandonTenovur Said:

"Bootcamp - Your Disk Could Not Be Partitioned.: Thank you for the suggestion, but I fear the performance wouldn't be as good. Most of the reasons I am trying to install windows 10 is because of games. They usually aren't compatible with mac os. I have once installed windows 10 successfully on this device (while on mac os sierra/I am now on catalina), but that was a couple of years ago and I also had to delete it to restore my mac. With all that said, I will look into it."

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You are Welcome.

Compatible is of No Concern:

Windows-Only compatible programs will run off the Virtual Machine while your macOS is running in the background.

I run Visual Basic off of it, along with games.

You can assign an Apple ID to it, and run it off of that as if it were its own computer.

Everything runs off of that - from Windows-Only Compatible Programs and Hardware (i.e. Printers) that will not run off of a macOS.

It goes all the way back to Windows 95.

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Answer 7

Loner T

Level 9

59,536 points

Sep 30, 2020 10:36 AM in response to BrandonTenoi

From macOS Terminal, post the output of

diskutil list

What is the year/model of your Mac (do not post the serial number)?

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Bootcamp - Your Disk Could Not Be Partitioned.

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