Does a Windows 10, clean install, create the necessary partitions?

AddRAM That seem to be a picture of disk partitions options (possibly for installation) once you have already booted the device you are installing from. My question was about how the original boot device selection seemed to influence the type of partition style that Windows eventually will be installed on.
as far as I can tell, but I have never seen this, as long as bios settings are correct a DVD or USB stick with the install media on it will show up as 2 different devices, one for each type of partition, and that choice determines the outcome.
Someone please correct me if this is wrong.
I am going to help a friend this weekend do a fresh install on a system with UEFI. I have not done an install on that type of system. Like you I have always made a large formatted partition with diskpart from the install media before proceeding so as to only have that one partition and no hidden ones (MBR of course).
But as GPT is being touted as the thing of the future the owner wants to install that way.

A Monell said:

Like you I have always made a large formatted partition with diskpart from the install media before proceeding so as to only have that one partition and no hidden ones (MBR of course).
But as GPT is being touted as the thing of the future the owner wants to install that way.

You can't do that with UEFI. There has to be a FAT32 EFI System partition, an NTFS partition for Windows and Microsoft claims that there must also be a small Microsoft System Reserved (MSR) partition.

AddRAM said:

Well there goes my experiment for today, I was gonna make 1 install partition on a GPT drive just as I`ve always done on a MBR drive for W7 and see if W10 would install on it.

Bang, Zoom

You can still try it and post the results Windows 10 should do 1 of two things, it will either give you an error that it can't create a system partition or it will shrink the partition you made for it to make it's own EFI System Partition. Also, that stupid MSR partition that Microsoft claims is required will not show up in disk management. It will show up in diskpart when you list partitions on the drive, though.

Also, that stupid MSR partition that Microsoft claims is required will not show up in disk management. It will show up in diskpart when you list partitions on the drive, though.

On an MBR disk, Windows Setup will create a System Reserved partition and a primary Windows partition.



On a GPT disk, Windows Setup will create a Recovery partition, an EFI System partition, a Microsoft Reserved partition (won't show in Disk Management) and a primary Windows partition.