[FIX] Windows Could Not Prepare The Computer To Boot Into The Next Phase Of Installation

In this post, learn how to fix "Windows could not prepare the computer to boot into the next phase of installation" error while installing Windows 10/8/7.

Kapil Arya
11x Microsoft MVP · Admin
2 min read
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If you’re going to make clean install of Windows and you’re unable to proceed to due to some error, you may want help. Today, in this article, we’re going to talk about a well known issue that might occur while installing Windows.

During the clean installation, we got following error which prevented the installation:

Windows could not prepare the computer to boot into the next phase of installation. To install Windows, restart the installation.

FIX Windows Could Not Prepare The Computer To Boot Into The Next Phase Of Installation

After getting this message, our next move was to restart the installation. However, even after 3 attempts, we found no change in the situation. The error keeps appearing in a loop, ultimately leading to failure of clean install. If you’re also facing this issue while installing Windows 10/8/7, try out suggestions mentioned below, see if they helps.

FIX: Windows Could Not Prepare The Computer To Boot Into The Next Phase Of Installation While Installing Windows 10/8.1/8/7

FIX 1 – General Suggestions

1. Make sure your system is not connected to any other external devices while installation.

2. Check your hard disk for errors (refer FIX 1 here), just in case.

3. If you’re getting this error while upgrading, repair the boot records first and then retry with the upgrade.

4. For upgrade users, you must temporarily disable your security software and see if this helps.

FIX 2 – Using Advanced Recovery Command Prompt

1. Boot from the installation media, let the setup wizard start, click Repair your computer link.

FIX Windows Could Not Prepare The Computer To Boot Into The Next Phase Of Installation

Then select Troubleshoot > and choose Command Prompt on Advanced options screen.

2. In the Command Prompt window, type these commands (mentioned in bold) one by one and press Enter key after each:

diskpart                               Opens Disk Management in command interface
list disk                                 Lists all available disks on system
select disk #                                Select the system disk you're using
list partition                                List partitions on selected disk
select partition #              Replace # with partition to which you want to install
active                                        Marks selected partition as active
format fs=ntfs        Formats selected partition. Use format fs=fat32 for UEFI systems
assign                                              Assigns a drive letter to partition
exit                                                        Exists DiskPart

FIX Windows Could Not Prepare The Computer To Boot Into The Next Phase Of Installation

3. Close Command Prompt and restart the installation, this time you should be able to install Windows without any error.

Hope this helps!

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Article by

Kapil Arya
11x Microsoft MVP · Admin

Kapil holds Microsoft MVP title in Windows IT Pro expertise, 11-times in a row (2014-2025). He is 8-times Windows Insider MVP as well, and author of 'Windows Group Policy Troubleshooting' book. In 2015, Microsoft India accomplished him as 'Windows 10 Champion'. Being passionate Windows blogger, he loves to help others on fixing their system issues. Kapil has worked with official Microsoft Community Engagement Team (CET) on several community projects. You can subscribe him for news/updates and fixes for Windows.

23 Comments
vkaliyax

Good One, Disk clean helped me to resolve the issue.

Kapil Arya Author

^^ Glad we could help 😎

rizal

thx sir, FIX 2 work easly:)

Kapil Arya Author

^^ Happy to help 😊

DJ

Fix 2 worked perfect for me. Past the install now and still working great! THANK YOU!!!

Kapil Arya Author

^^ Glad to help DJ 😎

Bunny

Sir I see this when I type format fs=NTFS…

Virtual disk service error :
Format is not allowed on the current boot, system, pagefile, crashdumb or hibernation volume
What should I do I can’t Install any type of operating system in this even XP …
Help me please

Nobody in particular

Hello! do this work in bot =h gpt and mbr drives? because when I typed the ‘active’ command, it says my disk is not a fixed mbr disk…

Nobody in particular

Hello! do this work in both gpt and mbr disks? because when I typed the ‘active’ command, it says my disk is not a fixed mbr disk… I’m really sorry for the typos…

abbas

hello, i have the same problem.´disk is not a fixed mbr disk… .
i cleaned the system partition and there is no more partition on my hdd, and im going to install the windows again, i hope this work.

Kapil Arya Author

^^ It should work, try it. Good luck!

Another tired windows 10 user

Im tired of windows 10 sh@@@@@ only bugs. Cant install nothing cant use old devices tope al people stop using this OS

Jm56Z

How do I restart the installation after leaving the command prompt ? I’m redirected to the choice between shut down and troubleshoot…

Jigar

Thnks, fix2 worked, i had no clue ehwts going on, rhis saved my day thnx

Kapil Arya Author

^^ Glad to help Jigar 😎

Roy

have tried this to no end. Still does not work.

Swapnil

Tysm sir…🤝…Fix2 works

Kapil Arya Author

^^ Cool :)

Raiyoz

WAHAAW Fix 2 Works like a charm for installing windows 11 also, Thank You!

Kapil Arya Author

^^ Glad it helped 🙂

Harsh

Thanks man … u r brilliant

Roman khan

Thanks problem solved solute to the fixer

Kapil Arya Author

^^ Glad to help!

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