Build 19043.928 out to Beta & Release Channel + ISO for 19043.928

@Johnny_55, @Saltgrass,

As I expected the GPT NTFS boots fine on the Dell XPS 8700 even when it is set for UEFI and secure Boot, it seems like the same result Saltgrass is getting with his ASUS Z490 which is also a machine with both modes supported,  Legacy BIOS or UEFI. 

It does not boot on a Legacy BIOS only machine because it requires the partition to be active and cannot set it active on GPT  partition.

Interesting. The concept just would not work in my situation with all the various devices I have, a mix of both modes supported, and legacy and uefi only devices. I require a flash that works with everything.

That is why I've been using a FAT32 USB Flash with the partition set active for the last 3 years. 

That is compatible with everything like the one made by MCT. 😉

I just went through this exercise again to reply to the observations of Saltgrass.

I agree with everything you say, it has been like that for the entire history of UEFI systems.  I am still having a problem understanding what is happening but perhaps something is getting stuck in the system or drive.  It appears converting a USB drive to MBR, after cleaning, makes the process go normally.

But still, my ASUS Z490 and Z590 Intel boards, will still boot and install using the one partition GPT configured NTFS partitioned drive.  I might just shut everything down all the way and look at this again tomorrow..

Thanks.

Rufus does create two partition install drives, but it puts something in the Fat32 partition to boot and start the install..  I may try that tomorrow also..

But still, my ASUS Z490 and Z590 Intel boards, will still boot and install using the one partition GPT configured NTFS partitioned drive.  I might just shut everything down all the way and look at this again tomorrow..

Thanks.

I just tried here on my Dell XPS 8700 and it does the same as your ASUS Z490 with a GPT NTFS partition. 

That is because they are machines that support both Legacy BIOS and UEFI.

The MBR FAT32 USB media with the partition set active will work on everything.

I did check on Rufus and it does as expected but you have to disable Secure Boot when you use that format..  not that great..

I was looking at your DISM /export-image command and you are using Index 1 for Win 10 Home?

I used Index 6 for Pro and it came out to 3.35 GBs..  So doing it that way isn't really that hard.

As far as I know, all UEFI machines support Legacy and UEFI Bios.  How it installs just depends on how you boot the media.

I did check on Rufus and it does as expected but you have to disable Secure Boot when you use that format..  not that great..

I was looking at your DISM /export-image command and you are using Index 1 for Win 10 Home?

I used Index 6 for Pro and it came out to 3.35 GBs..  So doing it that way isn't really that hard.

As far as I know, all UEFI machines support Legacy and UEFI Bios.  How it installs just depends on how you boot the media.

1) Rufus can be a pain, and it does not make a media that is compatible with all configurations.

2)That sample had index 1 because it was probably only win 10 Pro x64 in that specific case. Index 6 is correct for Win 10 Pro if you get the Multi editions ISO. 

3) As for UEFI machines the newer ones are UEFI only, like my Dell XPS 8930 or the Lenovo Yoga 920.

The ones that support both UEFI and Legacy BIOS are older machines or older motherboards.

Just F.Y.I. These are all Intel Machines:

Lenovo Yoga 920 was from 12/08/2017 UEFI only, already dropped Legacy Bios support

Dell XPS 8930 was from 05/20/2020 UEFI only, already dropped Legacy Bios support

Dell XPS 8700 Was from 2014 and has both UEFI and Legacy Bios support

MSI GT70-0NC is from 2015 and only has Legacy Bios.

Dell XPS 8300 Is much older and only has Legacy Bios. 

https://www.anandtech.com/show/12068/intel-to-remove-bios-support-from-uefi-by-2020

4)The  one you are using ASUS Z490 has both Modes and can boot from NTFS regardless of the mode it is set, the same on my Dell XPS 8700. You can also boot from MBR NTFS on those machines even when set for UEFI and Secure boot on.

Just use an Installation USB flash MBR FAT32 with the Partition set active and it will work with everything 😉

You still need an ISO editor to replace the original install.wim with the install.esd you create.

If you create an ISO from uupdump, when you download the zip file with the commands,  you have the option to specify install.esd  instead of install.wim, clearly the process is much longer for the conversion.