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Windows 7: Error message of "Setup was unable to create a new system partition"

29 Jul 2014   #1
NXTBIGTHING

Windows 7 ultimate 64bit
 
 
Error message of "Setup was unable to create a new system partition"

Let me start off my saying I've installed this exact copy of windows 7 before on this computer with no problems and it worked for years. I'm trying to install Windows 7 ultimate 64 bit version when I run into this message "Setup was unable to create a new system partition or locate an existing partition." So I search and find a solution in these forums (Setup was unable to create a new system partition) I do that but I get stuck on "format fs=ntsf". I'm getting a message error saying "The arguments specified for this command are not valid." What do I do? I googled but found several different answers and didn't fully understand some if them. Any help would be appreciated.


My System SpecsSystem Spec
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29 Jul 2014   #2
gregrocker
Microsoft MVP

 

Your syntax is off:

Commands are

DISKPART
LIST DISK
SELECT DISK 0 (after confirming Windows 7 target HD #)
CLEAN
CREATE PARTITION PRIMARY
FORMAT FS=NTFS LABEL="WINDOWS 7"
ACTIVE
EXIT
EXIT

If this isn't enough start at the top of Overcoming Windows 7 Installation Failures - Windows 7 Help Forums

If those steps fail then test your hard drive with the maker's HD Diagnostic extended CD scan, followed by Disk Check done from the installer Command Line on a full disk partition your create.
My System SpecsSystem Spec
29 Jul 2014   #3
NXTBIGTHING

Windows 7 ultimate 64bit
 
 

I tried that way and I get this error message "Virtual disk service error:
The file system is incompatible"
My System SpecsSystem Spec
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30 Jul 2014   #4
gregrocker
Microsoft MVP

 

Do you have a UEFI BIOS? Reboot and tap the key for BIOS setup, look on all the tabs including Boot and Advanced for UEFI, CSM or Legacy BIOS settings. What are they exactly?

If you want to install to UEFI then you wouldn't use those commands as it uses a GPT partitioning scheme that doesn't have an MBR or Active partitions. It sounds like you may already have a GPT disk that is not accepting those commands. It needs to be Cleaned or have all partitions deleted, then run Convert GPT, start the install from a UEFI device in BIOS Boot menu, and create your Partitions during UEFI (Unified Extensible Firmware Interface) - Install Windows 7 with - Windows 7 Forums .

If you want to Bypass UEFI to Install WIn7 it shows how in the blue link. You'll want to enable CSM, not boot as a UEFI device, clean the drive, Convert MBR, then try the partitioning commands or just exit and try running the install creating your partition(s) during install using the Drive Options pictured in Steps 7 and 8 of Clean Install Windows 7
My System SpecsSystem Spec
02 Oct 2014   #5
henhache

Windows 7 - 64 bit
 
 
Solution

Try:

[Fix] Error during installing Windows 7 from USB (Setup was unable to create a system partition or locate an existing partition.) | Druss Blog

I had tried everything and all I needed to do was unplug my USB drive.

Do the DISKPART stuff but without a USB plugged in...

I spent days to get this.
My System SpecsSystem Spec
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 Error message of "Setup was unable to create a new system partition"




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