Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: UEFI (Unified Extensible Firmware Interface) - Install Windows 7 with

22 Apr 2014   #181

Windows 7 Ultimate x64

Hello guys. I really need some advice here. I have a laptop Asus G73jh, it supports UEFI. Connected to it externally (through sata from the dvd drive port) is a WD 3.5" 3TB disk. This is formated in GPT NFTS just a single partition. Here i store all my music production software/libraries. I want to install windows 7 on this one seperately (dual boot) so i can use this disk exlusively for music production. I went past the point and finally made a W7 UEFI usb installation disk. All good it will let me select the 3TB disk for installation. When i click next it will not let me continue with this: "setup was unable to create a new system partition...see the log blah blah". So i guess it won't let me install it in that partition (i'm not sure why? because it is NFTS?). Anyways i can't format the disk to a new partition since i don't have anywhere to copy my data. If the problem is it needs a clear unlocated space to make the partition i can shrink the one i have already using the free space i have. Can someone clarify what the hell needs more to install? Thanks!
My System SpecsSystem Spec
04 May 2014   #182

Sao Paulo
Freezing at Windows Install

I've installed Windows 8.1 Pro X64 UEFI mode into my Asus K45A. But for now I want W7 to be installed just like W8.1 is instaled by now. Fastboot and UEFI.

Well, I'm using Rufus to make USB flesh drive install..
It freezes right after Windows setup load up files... that white progress bar over a black screen...
When it appears Windows is Starting and Windows flags shows up... than it freezes.

I just tried it with:
Secureboot ON, Fastboot ON, CSM OFF
Secureboot ON, Fastboot OFF, CSM OFF
Secureboot OFF, Fast boot OFF, CSM OFF

All of these didn't work.

Just this conf worked out.
Secure boot OFF, Fastboot OFF, CSM ON.
But if I'm not wrong this conf will not install Windows 7 in UEFI mode.

So, what I'm doing wrong?
My System SpecsSystem Spec
04 May 2014   #183
Microsoft MVP


Proceed with the install to see.

Are there specific CSM settings to choose from, or sub-settings like UEFI First or Legacy First?

CSM doesn't necessarily preclude UEFI boot but there may be other settings to assure it. Look for UEFI boot, Legacy Boot, and under Save Settings tab see if there is a Save Optimized Windows 8 settings (which comes with some preinstalled Win7) or Save Default settings for using another configuration.

Did you use Option 1 in UEFI Bootable USB Flash Drive - Create in Windows
My System SpecsSystem Spec

04 May 2014   #184

Sao Paulo

Proceed with CSM enabled?

There's no specific sub options after enabling CSM... but if Secureboot is enabled even enabling CSM and saving after reboot fastboot comes to be active and CSM disabled.

There're two options into boot options like my USB when CSM ON. One is for normal USB boot and other is for UEFI boot. I'd choose UEFI.

So. I Will try it with CSM ON and Secureboot OFF, fastboot OFF, usb UEFI boot option.

If CSM does not precule UEFI what CSM really is? :S

There's no specific optmized options. Only "restore to defaults" in setup (a.k.a. BIOS)

yes, I did use Option 1 but I'm trying it on the manually way too

About 10 minutes I'll come here to say what happened with my CSM ON attempt but I'm online right now to see any new answers
My System SpecsSystem Spec
04 May 2014   #185
Microsoft MVP


Secure Boot is only for preinstalled Win8, a marketing gimmick to convince business that it must migrate to 8 to protect against BIOS infections we've never seen here at the top tech forums. It failed miserably considering that business if moving off of XPiring to Windows 7 almost entirely.

So forget it and try the install with CSM. With some mobo's that's enough. If it isn't we need to look at your BIOS settings since they are all different, another reason UEFI is problematic crapware not worth the bother.
My System SpecsSystem Spec
04 May 2014   #186

Sao Paulo

Yeah. Forget Secureboot. heehhehe By now I'm happy with my fresh W7 install (: It worked
But I got one more question. What about fastboot? Fastboot is avaiable only if secure boot is on too?
All that's because I'm fastboot, if possible with my W7. Because, for me, it's very very useful to have fastboot.
Is it a matter of drivers? Or because I used W8.1 + Ubuntu and both of them boot up faster. So I think. Why with W7 should be different? Right? So, Is that possible?
My System SpecsSystem Spec
04 May 2014   #187
Microsoft MVP


Try Fast Boot to see if it works with CSM.

CSM is Compatibility Service Module which allows legacy BIOS functions. I don't think it should preclude Fast Boot but every mobo is different.
My System SpecsSystem Spec
04 May 2014   #188

Sao Paulo

Got it. So many thanks man. I hope this can help other with same issue.
My System SpecsSystem Spec
20 Jun 2014   #189
Happy Hopping

win 7 pro 32 bit

from page 1 of this tutorial, my hard drive does NOT form those 3 GPT partition. So win 7 won't install. How do you make win 7 form those 3 partitions?

In some details, I am working on a Toshiba ALL in 1 PC that c/w win 8. So I wiped all the partition on it and start off fresh.

I change the BIOS to non secure boot, and make the boot mode to CSM Boot

So win 7 boot up, and I'm at step 7 on page 1 of the tutorial

UEFI (Unified Extensible Firmware Interface) - Install Windows 7 with

click/tap on New, Apply (for full size of disk), and OK. (see screenshot above)

8. You will notice that the disk has now been formatted as GPT with 3 partitions. Select the "Primary" partition 3, and click/tap on Next.
I don't see the 3 partitions. I only see win 7 formatted the entire in 1 big 750GB partition. So obviously win 7 won't install

Prior to that, it's all unallocated space
My System SpecsSystem Spec

 UEFI (Unified Extensible Firmware Interface) - Install Windows 7 with

Thread Tools

Similar help and support threads
Thread Forum
UEFI Install of Windows 7 Pro
I wonder if someone will help me decide if I want to install in UEFI? My end goal may be to dual boot with windows 8.1 or 10, or even Linux, not sure yet, but that may matter so thought I would mention it. I already have the Retail DVD created and the link from here to do this, but still...
Installation & Setup
Is Windows 7 x64 UEFI install even possible?
Hi everyone, i joined this forum because i found a lot of interesting information here regarding Windows installations and unattended setups. I've been in I.T. for 15 years installing windows since 3.1 We now are a a crucial step in Microsoft Windows life where all the computers with USB3.0...
Installation & Setup
Can I Install Windows 7 in UEFI?
Can I install Windows 7 in UEFI? I just use ISO2Disc to burn Windows 7 ISO file to a USB flash drive with GPT, take the USB drive to boot off my UEFI-based PC, it still fails to boot. What step is missing? Or which edition of Windows 7 should I use for UEFI compatibility? Please help!
Installation & Setup
Asus N76 UEFI - W7 64 Install Hangs on Logo (DVD UEFI Boot)
**** This issue has been resolved **** **** Look at Page 4, posts 4 and 5 **** **** You need to enable Legacy MBR by Enabling Launch CSM in the EFI Setup **** Hello all, This is my first post. I am a Windows 7 user and now (against my will) Windows 8. I bought an ASUS N76 laptop...
Installation & Setup
What's the benefit of UEFI and install Windows in UEFI mode?
I am not sure if this subforum is the right place, if not, pleases help me transfer to the right forum... I recently just build a new setup with Asus P8Z77-V LK, this motherboard comes with UEFI boot and legacy BIOS boot support. So I tested install windows 7 in both mode, and I didn't find...
Installation & Setup

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 01:01.
Twitter Facebook Google+