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

@Saltgrass. 

Just creating a GPT NTFS media on USB now.

Will see where it can boot and where it cannot, stay tuned...

The Idea behind a FAT32 Installation media is that it is compatible with Both Legacy BIOS or UEFI machines that require FAT32.

That is the reason why Media Creation Tool creates it on MBR FAT32 devices with the Active partition.

There is nothing in the FAT32 partition.  I just created another one.  When I set it in the Boot Device menu, I was given both partitions as a choice.  If I chose the FAT32 partition, nothing happened but if I selected the NTFS partition it booted to the install.

I am wondering now if the FAT32 partition is still necessary but it does work with it on the drive.  I suppose removing the FAT32 partition will be my next test.. ;)

Bottom line, is this a legacy bios or UEFI? If UEFI, you have to have FAT32.

I have never tried to create a FAT32 NTFS combo flash card. Perhaps this is why it can't be made active. I understand rufus uses some trick to pull this off to get around the 4G limit. Then again, using rufus, one still has to create 2 flash cards, one for legacy, another for UEFI.

Using FAT32 like MS does, you only require 1 flash card that can handle both legacy and UEFI bios. Yes NTFS flash cards work fine for legacy systems only.

I have several FAT32 cards for this. When a new version comes out, only have to quick format and copy new files over, it remains bootable.

There also is another option rather than converting wim to esd, as Suat once pointed out, you can split the wim file to work on FAT32 as well.

I use a script to convert wim to esd. To use dism alone, you have to extract each individual version in the wim file. eg. Home, Pro and whatever else. Way too much work.

Regards,

Johnny, 

He said it was formatted as GPT that is why you cannot make it active.

Anyway, I just tried making a GPT NTFS Installation media, and it is not recognized as bootable on the UEFI only machine, I'll give it a try on the older XPS 8700 that still takes NTFS, but I never tried before to boot from GPT NTFS....

I'll let you know in a minute :-)

@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.

Also it cannot boot on a UEFI only machine because it requires FAT32.

I went already through all these tests long time ago when I got the 1st UEFI only machine (Lenovo Yoga 920), now the same FAT32 requirement is on the Dell XPS 8930. 

As per UEFI specs they need FAT32 for booting.

As for DISM extracting the edition, usually I just need Win 10 Pro x64.

I do all the editions rarely just for some specific testing.

@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.