Windows 10: Install from D Drive?

Actually one can clean install from a mounted ISO by running setup from the sources folder. It will create a windows.old as well.

 

But doesn't that only work when run from a WINPE environment? For example, let's say I want to dual boot Windows 10 Home and Pro. I have a full install of Windows 10 Home and an empty NTFS partition (or unallocated space) reserved for Windows 10 Pro. To my knowledge, I cannot run setup.exe from within Windows 10 Home to do a clean install of Windows 10 Pro to the space I have reserved for it. I can format the partition as NTFS, use DISM to apply the Windows 10 Pro image from install.wim to it, and use BCDBOOT to add it to the boot menu, but I don't think I can do the install with setup.exe without booting into a WINPE environment.

 

Nope, no need for WinPE - I have done it this way many times...try it and see.... *Wink

 

Hi,
@Superfly : Yes, that works just fine.

Using a USB drive you can make it bootable for BIOS and UEFI using Bcdedit, all else can easily be done using Diskmanagement.

Code: bcdboot C:\Windows /s S: /f ALL[/quote] Replace S: with the drive letter of the USB drive.

Prior to using MR's Rescue media I often kept a few USB sticks that were made bootable like this to repair unbootabe Windows installs.

Cheers, *Wink

 

So are you saying I can mount the iso that's on my D Drive and install?

 

What would you mount it with?

 

Because I already have Windows 10 I can mount through explorer