Ops, something went wrong

Megahertz · 22 Oct 2020

I was browsing around and saw How to get the Windows 10 October 2020 Update version 20H2.
So I downloaded MediaCreationTool20H2.exe and downloaded the Win 10 2010 iso.
Shut ed down and booted from my Win 10 Pro SSD, mounted the Win 10 2010 iso and run setup,
It began to install (expand and copy) and then rebooted. Began to install and rebooted.
Now it cant boot as there is no option under boot menu to boot Win 10, only win 7 and Linux that are on another drive.
So apparently it damaged my boot loader on the EFI partition.

I have a disk image as a backup but I would like to learn how to fix this Win 10 beauty.

My windows version was 2004 and now is on the way to Windows 10 version 20H2 build 19042.572

NavyLCDR · 22 Oct 2020

Well, I guess the first place to start would be a screenshot of disk management with your explanation of what is on each partition, IE: windows 10, Linux, etc....

Disk Management - How to Post a Screenshot of

idgat · 23 Oct 2020

Megahertz said:

So I downloaded MediaCreationTool20H2.exe .....

A non-Microsoft/Windows unofficial system update program ..... ?

Ghot · 23 Oct 2020

idgat said:

A non-Microsoft/Windows unofficial system update program ..... ?

steve108 · 23 Oct 2020

Ghot said:

41.572?

Ghot · 23 Oct 2020

steve108 said:

41.572?

Don't ask me, ask Microsoft... ^^

Farvatten · 23 Oct 2020

idgat said:

A non-Microsoft/Windows unofficial system update program ..... ?

It's the name of the executable that Windows downloads to start the creation of the tool.

Ops, something went wrong-mediacreationtool20h2.jpg

zbook · 23 Oct 2020

On a working computer create a new bootable Windows 10 iso: Windows 10 October 2020 Update
https://www.microsoft.com/en-us/soft...load/windows10
Download Windows 10 ISO File
Create Bootable USB Flash Drive to Install Windows 10

Power on the computer and boot to the iso > troubleshooting > command prompt >
Administrator X:\windows\system32\cmd.exe >

Please post images of the commands with results.

type:

Code:

bcdedit | find "osdevice"
bcdedit /enum all

Code:

DISM /image:X:\ /cleanup-image /revertpendingactions

(replace the letter W with the partition drive letter displayed in the find "osdevice" comman results)

Reboot > see if it boots windows 10

If it fails to boot then continue with these steps:

Code:

lis dis
lis vol 
sel dis 0
det dis
sel par 1
det par
sel par 2
det par
sel par 3
det par
sel par 4
det par
sel par 5
det par
sel par 6
det par
sel dis 1
det dis
sel par 1
det par
sel par 2
det par
sel par 3
det par
sel par 4
det par
sel par 5
det par
sel par 6
det par
sel dis 2
det dis
sel par 1
det par
sel par 2
det par
sel par 3
det par
sel par 4
det par
sel par 5
det par
sel par 6
det par

Code:

bootrec /fixmbr
bootrec /fixboot
bootrec /scanow
bootsect /nt60

Megahertz · 23 Oct 2020

NavyLCDR said:

Well, I guess the first place to start would be a screenshot of disk management with your explanation of what is on each partition, IE: windows 10, Linux, etc....
Disk Management - How to Post a Screenshot of

Thanks for your help

Below is a what I have under first partition (EFI)

Megahertz · 23 Oct 2020

zbook said:

Code:

bootrec /fixmbr
bootrec /fixboot
bootrec /scanow
bootsect /nt60

Thanks for the help

zbook, my disk is EFI-GPT not Legacy-MBR