Hello, I need Help in making Dual Boot System. I already have system with Windows 10 , Now i want to install windows 7 in same Laptop. When i try to install windows in other Partition following error occured .
"Windows cannot be installed to this disk. The selected disk is of the GPT partition style" .
So please help me resolve this issue.
Hi vinashrawat,
You're dealing with Secure Boot and GPT (GUID Partition Table) issue installing Win7 dual boot on Win10 machine
Microsoft Secure Boot is a component which began with Microsoft's Windows 8 operating system that relies on the UEFI specification's secure boot functionality to help prevent malicious software applications and "unauthorized" operating systems from loading during the system start-up process.
GPT is the abbreviation of GUID Partition Table. The widespread MBR partitioning scheme, dating from the early 1980s, imposed limitations which affected the use of newer hardware. Intel therefore developed a new partition-table format in the late 1990s as part of what eventually became UEFI. The GPT as of 2010 forms a subset of the UEFI specification.
You don't have to make a BIOS switch to have Win 10 and Win 7 as long as you disable secure boot (for both).
As Win 10 is installed as UEFI you must also install win 7 as UEFI. To do so, make sure you boot the win 7 installation disk as UEFI.
Prepare your system for dual boot:
- As things can go wrong, before you begin, make a full system image (been there, didn't do that, big mistake).
- Backup your data on another disk.
- Defrag Win 10 partition.
- Open Disk Manager and create a new partition for Win 7 (>60G).
Boot from Win 7 installation disk as UEFI, go to install, choose the created partition and proceed.
Once installed, open device manager and load the missing drivers.
Windows boot manager will be created with Win 10 and Win 7 option.
To boot Win 7 installation DVD as UEFI when you launch boot menu you're going to see
- CD/DVD boot (that is Legacy- MBR)
- UEFI CD/DVD boot (that is UEFI)
How to Dual Boot Windows 10 with Windows 7 or Windows 8
Happy Computing!
Nic
Last edited by Snick; 28 Sep 2018 at 08:53. Reason: add info
If the laptop came with Win 10, it's probably from new generation CPU / Chipset
In this case you must also add SATA and USB drivers to the installation disk
Please give us all Laptop specs
Last edited by Megahertz07; 28 Sep 2018 at 14:18.
Sorry for Late reply.
The Product that i have, his complete detail :-
Access Denied
Your laptop uses a Kaby Lake CPU and internal graphics (Intel 620).
To install win 7 you have to:
- Disable, on BIOS, secure boot and fast boot.
- Shrink the C: partition to make space to install Win 7 (85G). Use Disk manager to do it.
- Add SATA and USB drivers to the win 7 installation disk. Read my tutorial Create a Windows 7 USB flash installation with new drives for new MB's
SIW2 has made an application to add the drivers to the installation disk. Update your Win 7 installation media.
When you have the Win 7 installation disk (DVD or USB flash disk) with the drivers added, boot it as UEFI, go to install and choose the partition you have created with Disk manager.
Read Unofficial Patch Unblocks Windows 7 and 8.1 Updates for Kaby Lake, Ryzen - ExtremeTech
The Intel Graphics driver
Replace the win64_154519.4678\Graphics\igdlh64.inf by the attached one (rename igdlh64.inf.txt to igdlh64.inf)
The drivers for Kaby Lake
Last edited by Megahertz07; 29 Sep 2018 at 09:05.
Thanks for Reply and Support.
Before Sharing of Your Article I Have Installed Windows 7 in My laptop. Now i am again in trouble with Windows 7 Installation :-no USB port is working.
How i install Windows 7
FIrst i have convert my HDD Partition into GPT to MBR . So with this all Partition deleted and No any OS in HDD. So after that i have try to Install Win 7. But during Windows 7 Installation No Driver Found error occured with Windows 7 USB .
Again i have Installed Windows 10 and its installed Properly. Now With Windows 7 USB i have installed windows 7 in another Partition like a Software. This way its installed smoothly, at Boot time i have option to choose OS.
Now a new Problem rise which is No USB Port is working. and With Windows 10 all USB ports are working.
No chipset Driver available from Manufacturer end for windows 7 .
You don't have USB because you didn't do anything I've instructed.
Extract the kabyLake.zip drivers to a folder. Under win 7 open device manager and on USB ask for a driver update. Point to the extracted drivers folder.
Make sure you have no yellow alerts on device manager.
Did you installed the Intel graphics driver replacing the igdlh64.inf (see post #6)?
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