如果您在尝试从可启动USB安装(USB)Windows 10时遇到(Windows 10)Windows安装错误消息Setup is unable to create a new system partition(Setup was unable to create a new system partition),那么这篇文章可能会对您有所帮助。

当你遇到这个问题。您将收到以下完整的错误消息;
Setup was unable to create a new system partition or locate an existing system partition. See the Setup log files for more information.
此错误与硬件有关,取决于您的主板、USB接口、您使用的USB记忆棒。
在安装过程中,Windows必须确定哪个驱动器是您的主引导驱动器,以便正确配置MBR和引导加载程序。如果Windows安装程序无法可靠地确定哪个是引导驱动器,则会出现此错误。
安装程序(Setup)无法创建新系统分区或找到现有分区
如果您遇到此问题,您可以尝试以下任一推荐的解决方案来解决此问题。
- 弹出并重新插入 USB
- 手动创建引导分区
让我们看一下关于列出的每个解决方案所涉及的过程的描述。
1]弹出并重新插入USB
请执行下列操作:
- 在收到错误提示时,如上图所示,从 PC上拔下Windows安装USB 。
- 退出安装向导。
- 返回主设置页面,选择立即安装(Install Now),无需重新插入USB驱动器。
您将收到有关Windows(Windows)无法找到安装文件的错误提示,并要求您加载CD/DVD驱动程序以继续进行Windows安装。
- 单击提示上的确定(OK),然后再次退出设置对话框以返回主设置屏幕。
- 现在,重新插入USB驱动器,然后再次选择立即安装(Install Now)。
这一次,安装将正常进行。
2 ]手动(] Manually)创建引导分区
此解决方案要求您从Windows安装程序命令行手动使用 diskpart 将安装/安装文件从USB复制到本地驱动器,然后使用本地驱动器进行引导和安装,完全绕过USB。
请执行下列操作:
- 在您看到相关错误消息的对话框中按 Shift+F10 以调出命令行控制台。
- 在控制台中,键入
diskpart.exe并按 Enter 以访问DiskPart。 - 现在键入以下命令并在每行后按Enter :
list disk
(Make)记下要安装Windows(Windows)的磁盘号。
select disk=0
其中磁盘 0 是您的目标驱动器,因此请注意,该驱动器上的所有信息都将被删除。
clean
convert mbr
create partition primary size=123
其中 123 – 是新分区的大小。
select partition=1
active
format fs=ntfs quick
assign
exit
接下来,键入下面的命令并按Enter 键(Enter)列出所有驱动器。
wmic logicaldisk get caption
- 导航(Navigate)到USB闪存驱动器(您的USB驱动器包含一个引导文件夹)。例如:键入
d:并按 Enter。 - 接下来,键入下面的命令并按Enter将所有文件从USB驱动器复制到 C: 驱动器:
xcopy d: c: /e /h /k
- 现在,要使您的
C:驱动器可启动,请键入以下命令并在每行后按Enter :
bootsect /nt60 c:
bootsect /nt60 c: /mbr
- 从计算机中弹出USB驱动器,然后重新启动。
- 引导(Boot)回Windows设置并选择立即安装(Install Now)。
安装应该继续进行,没有任何错误。
希望这可以帮助!
Setup was unable to create a new system partition error on Windows 10
Іf you encounter thе Windows setup errоr message Setup was unable to create a new system partition when attempting to install Windows 10 from a bootable USB, then this post may help you.

When you encounter this issue. you’ll receive the following full error message;
Setup was unable to create a new system partition or locate an existing system partition. See the Setup log files for more information.
This error is hardware-related and it depends on your motherboard, your USB interface, the USB stick you are using.
During setup, Windows must identify which drive is your primary boot drive in order to correctly configure the MBR and bootloader. If the Windows setup cannot reliably determine which is the boot drive, this error will appear.
Setup was unable to create a new system partition or locate an existing partition
If you’re faced with this issue, you can try either of the recommended solutions below to resolve the issue.
- Eject and re-insert the USB
- Manually create the boot partition
Let’s take a look at the description of the process involved concerning each of the listed solutions.
1] Eject and re-insert the USB
Do the following:
- On getting the error prompt, as shown in the lead-in image above, unplug the Windows installation USB from the PC.
- Exit the installation wizard.
- Back at the main setup page, select Install Now without re-inserting the USB drive.
You’ll get an error prompt about Windows being unable to locate setup files, and asking you to load a CD/DVD driver for Windows setup to proceed.
- Click OK on the prompt and then exit the setup dialog once more to return to the main setup screen.
- Now, re-insert your USB drive, then select Install Now again.
This time, the installation will proceed normally.
2] Manually create the boot partition
This solution requires you to manually use diskpart from the Windows setup command line to copy the setup/installation files from the USB to the local drive and then use the local drive to both boot from and install to, bypassing the USB completely.
Do the following:
- Press Shift+F10 at the dialog where you see the error message in question to bring up a command-line console.
- In the console, type
diskpart.exe and hit Enter to access DiskPart. - Now type the following commands and hit Enter after each line:
list disk
Make note of the disk number to install Windows to.
select disk=0
Where disk 0 is your destination drive, so be careful, all information on this drive will be removed.
clean
convert mbr
create partition primary size=123
Where 123 – is the size of new partition.
select partition=1
active
format fs=ntfs quick
assign
exit
Next, type the command below and hit Enter to list all your drives.
wmic logicaldisk get caption
- Navigate to USB flash drive (your USB drive contains a boot folder). For example: type
d: and hit Enter. - Next, type the command below and hit Enter to copy all files from USB drive to C: drive:
xcopy d: c: /e /h /k
- Now, to make your
C: drive bootable, type the command below and hit Enter after each line:
bootsect /nt60 c:
bootsect /nt60 c: /mbr
- Eject the USB drive from your computer, and restart.
- Boot back into Windows setup and select Install Now.
The installation should proceed without any errors.
Hope this helps!