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Windows 7: Have any solution to install windows 7 uefi without csm support

31 Aug 2015   #11
trungdinh1890

Windows 8 Pro x64
 
 

Quote   Quote: Originally Posted by ThrashZone View Post
Hi,
There's probably another option behind uefi in the red box
Check in the security section too
Attachment 370359
that setting is enable password for enter bios only


My System SpecsSystem Spec
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01 Sep 2015   #12
ThrashZone

Win-7-Pro64bit 7-H-Prem-64bit
 
 

My System SpecsSystem Spec
01 Sep 2015   #13
amakuzax

Windows 7 Ultimate x64
 
 

Actualy i cant go back to w7 becuse of my hacked mobo to support sli
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19 Jan 2016   #14
dadw7

Windows 7 Ultimate x64
 
 

Sorry for posting to this old thread(probably should have created new one), but I have exactly the same question: is it possible at all to use windows 7 (x64) in pure UEFI mode? That is not only UEFI/GPT boot, but also all CSM/legacy disabled in BIOS. Has anyone succeeded in doing this? I don't understand official MS position: it seems they say that OS itself should support legacy-free UEFI operation, but some 3rd party drivers(video for instance) require CSM. For me this seems to be not true: with CSM disabled I get stuck even during safe mode(command prompt) boot just after the CLASSPNP.SYS driver is loaded, while with CSM enabled it boots OK. So the problem arises before any graphics/video driver is loaded. Maybe this happens because I have converted my installation from BIOS/MBR, but not initially installed in UEFI/GPT mode? Anyway it's interesting to know if somebody has installed in UEFI mode and has windows 7 bootable with CSM disabled completely.
My System SpecsSystem Spec
19 Jan 2016   #15
ThrashZone

Win-7-Pro64bit 7-H-Prem-64bit
 
 

Hi and welcome to SevenForums,
Without CSM you have no secure boot
Without secure boot you have no use for UEFI install best to use the default AHCI compatibility with only C drive and no system reserved partitions at all and CSM is enabled.

Safe mode and safe mode with networking those are something I have no idea how to get into on my x99 board

I believe Shift+power up button
My System SpecsSystem Spec
19 Jan 2016   #16
dadw7

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by ThrashZone View Post
Without CSM you have no secure boot
I don't use secure boot, just turned it off in BIOS. UEFI install is still useful if I want to dual-boot with other UEFI OS, or just want to have GPT drive bootable. Turning CSM off is useful because it reduces boot time, since no legacy cruft is loaded. You could try to boot into safe mode pressing F8 at the start of loading windows to go into boot menu?
My System SpecsSystem Spec
19 Jan 2016   #17
ThrashZone

Win-7-Pro64bit 7-H-Prem-64bit
 
 

F8 is my boot menu list on x99.
My System SpecsSystem Spec
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 Have any solution to install windows 7 uefi without csm support




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