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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.

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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13 Comments

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

  • Kapil Arya

    ^^ Glad we could help 😎

  • thx sir, FIX 2 work easly:)

  • Kapil Arya

    ^^ Happy to help 😊

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

  • Kapil Arya

    ^^ Glad to help DJ 😎

  • 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

  • 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…

  • 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…

  • 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

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

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

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

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