Unable to Install Windows 7 Shows Partition Error

Recently facing Partition Error while installing Windows 7.

Note: Previously installed several times never faced this issues.

*i.imgur.com/DkE9RZ7.jpg

Where exactly you are trying to install Windows?
What is the source of installation?
How have you partitioned your disk?
Is it a dual boot?

TheSloth said:
Where exactly you are trying to install Windows?
What is the source of installation?
How have you partitioned your disk?
Is it a dual boot?

I try to install Windows OS from USB to My Hard Drive 2 x WD 1TB, Both Shows the Same problems... Confused Previously Installed no of times.

Source of Windows OS downloaded from P2P sites

Try to format Existing Partition do fresh OS... Unable to do that in both hardisk....Shows same error one is MBR Boot, another one shows GPT

W

Your mobo is set in UEFI only mode that is why you are getting this error,change it to compatibility/CSM/legacy mode(check in your mobo bios boot settings).

whitestar_999 said:
Your mobo is set in UEFI only mode that is why you are getting this error,change it to compatibility/CSM/legacy mode(check in your mobo bios boot settings).

Tried...UEFI Enable/ Disabled

W

Is the hard connected to sata port of the mobo?Have you restarted the pc after disabling UEFI in mobo bios?Which software you used to create bootable win 7 pen drive?Is there some CSM/legacy option in your mobo bios,if yes then enable it.

shreeux said:
Recently facing Partition Error while installing Windows 7.

Note: Previously installed several times never faced this issues.

*i.imgur.com/DkE9RZ7.jpg

Change the partition to GPT..
This happen as the windows ISO installation file size increased..
How to Convert MBR Disk to GPT | MiniTool Partition Wizard Tutorial

Without data loss..
I used minitool
Download any one
0B49A62F2E3E97B9E66CAD58EB76EF332185CC8A
152E720E5A7FB2FF934F98E538E821B4A40BF5CC
C7AF109C71075E073C6327CBAAC3963C42DD540C

Download Rufus - Rufus

Install this boot software on any pendrive or memory card (using card reader).

Boot pc using pendrive or memory card.

Convert MBR to GPT or vice versa

whitestar_999 said:
Is the hard connected to sata port of the mobo?Have you restarted the pc after disabling UEFI in mobo bios?Which software you used to create bootable win 7 pen drive?Is there some CSM/legacy option in your mobo bios,if yes then enable it.

Hard drive connect to Mother Board SATA only
Yes, restarted arter disable UEFI
Windows USB tool, Win2USB,Rufus all software used
No CSM/legacy option in Bios

W

Mention exact system specs(processor & mobo model).Also mention how these two WD hdd were connected before & working.

TigerKing said:
This happen as the windows ISO installation file size increased..

Win ISO size has no relation with GPT/MBR,I think you are confusing it with NTFS/FAT32(FAT doesn't support files larger than 4gb).

TigerKing said:
Change the partition to GPT..
This happen as the windows ISO installation file size increased..
How to Convert MBR Disk to GPT | MiniTool Partition Wizard Tutorial

Without data loss..
I used minitool
Download any one
0B49A62F2E3E97B9E66CAD58EB76EF332185CC8A
152E720E5A7FB2FF934F98E538E821B4A40BF5CC
C7AF109C71075E073C6327CBAAC3963C42DD540C

Download Rufus - Rufus

Install this boot software on any pendrive or memory card (using card reader).

Boot pc using pendrive or memory card.

Convert MBR to GPT or vice versa

I was wrongly done... While Installing OS, when error pop ups, I used CMD to convert MBR to GPT. I lost all important documents in one of my Hardisk that also heard some noise Tak Tak...So send to replacement for Warranty only 6 months to left to expired.
They give replacement instantly, that was on top of Hardisk Black Color sticker, that means it was refurbished.
I refused to take replacement. I request to Blue color label New Hardisk.
They assured it will take 7 to 10 days to reach by Courier.

Above your given link after installing OS only will change format.

As of now I need How to Change Format with any data loss...While Installing OS.

whitestar_999 said:
Mention exact system specs(processor & mobo model).Also mention how these two WD hdd were connected before & working.

Win ISO size has no relation with GPT/MBR,I think you are confusing it with NTFS/FAT32(FAT doesn't support files larger than 4gb).

Processor:-
Name Intel Core 2 Quad Q9550
Codename Yorkfield
Specification Intel(R) Core(TM)2 Quad CPU Q9550 @ 2.83GHz
Package (platform ID) Socket 775 LGA (0x4)

Mother Board: Intel® Desktop Board DP45SG
Northbridge Intel P45/P43/G45/G43 rev. A2
Southbridge Intel 82801JR (ICH10R) rev. 00
Graphics Interface PCI-Express
PCI-E Link Width x16
PCI-E Max Link Width x16
Memory Type DDR3
Memory Size 8 GBytes
Channels Dual, (Symmetric)
Memory Frequency 666.7 MHz (1:2)

When ever connect two Hardisk... Always some issues like some times will detect or some starting issues or freezing.

So I disconnect one use as external through hardisk casing

W

Changing between MBR & GPT is risky even when using tool suggested above,better take a back of important data first. Windows can only be installed on a hard disk directly connected to sata port of mobo so no hard disk casing for win install.

whitestar_999 said:
Changing between MBR & GPT is risky even when using tool suggested above,better take a back of important data first. Windows can only be installed on a hard disk directly connected to sata port of mobo so no hard disk casing for win install.

Already lost data to change format in command prompt
I never Installing OS in hardisk casing.

My doubt is , till now I never faced this problem. Why this happen, Microsoft change any modifications in current version OS?

W

Somehow the bios setting of your mobo was changed,maybe you did some bios reset or its cmos battery got weak/replaced.

Last year, I installed redstone 4 and it was GPT.. and drive was MBR..
So I first changed system using minitool..
So without any data lost I converted only c drive to GPT.. and after that one by one changed all drive to GPT, if I remember correctly, no data lost.

Any hard disk changes are done when hard disk is not in use, otherwise you will lose data.
So booting up through different software helps, it uses RAM memory.

W

TigerKing said:
Last year, I installed redstone 4 and it was GPT

It is not windows which is GPT but your mobo bios.Win 10 needs GPT only if mobo is set to UEFI only mode or the hdd you are installing on is larger than 2TB(because that requires GPT).

L

If I was not wrong, Windows 7 should be installed on legacy BIOS hard drive. I got it fixed by disabling UEFI and Secure boot in BIOS. Windows 7 has no GPT issue, which is for Windows 10

W

lotabsorbing said:
If I was not wrong, Windows 7 should be installed on legacy BIOS hard drive. I got it fixed by disabling UEFI and Secure boot in BIOS. Windows 7 has no GPT issue, which is for Windows 10

Win 7 32bit does not support booting from GPT(irrespective of UEFI enabled or not) but win 7 64bit does support booting from GPT media with UEFI enabled.