Solved One last attempt to change LEGACY to EUFI

Microsoft Windows [Version 10.0.19043.1237]
(c) Microsoft Corporation. All rights reserved.

C:\WINDOWS\system32>chkdsk /scan
The type of the file system is NTFS.

Stage 1: Examining basic file system structure ...
782080 file records processed.
File verification completed.
Phase duration (File record verification): 5.04 seconds.
3016 large file records processed.
Phase duration (Orphan file record recovery): 0.00 milliseconds.
0 bad file records processed.
Phase duration (Bad file record checking): 0.17 milliseconds.

Stage 2: Examining file name linkage ...
436 reparse records processed.
863064 index entries processed.
Index verification completed.
Phase duration (Index verification): 9.32 seconds.
0 unindexed files scanned.
Phase duration (Orphan reconnection): 246.97 milliseconds.
0 unindexed files recovered to lost and found.
Phase duration (Orphan recovery to lost and found): 0.96 milliseconds.
436 reparse records processed.
Phase duration (Reparse point and Object ID verification): 5.51 milliseconds.

Stage 3: Examining security descriptors ...
Security descriptor verification completed.
Phase duration (Security descriptor verification): 493.67 milliseconds.
40493 data files processed.
Phase duration (Data attribute verification): 0.82 milliseconds.
CHKDSK is verifying Usn Journal...
494089744 USN bytes processed.
Usn Journal verification completed.
Phase duration (USN journal verification): 4.59 seconds.

Windows has scanned the file system and found no problems.
No further action is required.

233401340 KB total disk space.
46690248 KB in 117002 files.
103936 KB in 40494 indexes.
0 KB in bad sectors.
1399144 KB in use by the system.
65536 KB occupied by the log file.
185208012 KB available on disk.

4096 bytes in each allocation unit.
58350335 total allocation units on disk.
46302003 allocation units available on disk.
Total duration: 19.71 seconds (19718 ms).

C:\WINDOWS\system32>

Open administrative command prompt and copy and paste:

diskpart
lis dis
lis vol
sel dis 0
det dis
lis par
sel par 4
det par
del par override
lis par

Please post images of the commands with results into this thread.

Reboot

Launch Mini tool partition wizard.

See: OPTION ONE

Convert MBR Disk to GPT Disk using MiniTool Partition Wizard Free without Data Loss​

Microsoft Windows [Version 10.0.19043.1237]
(c) Microsoft Corporation. All rights reserved.

C:\WINDOWS\system32>diskpart

Microsoft DiskPart version 10.0.19041.964

Copyright (C) Microsoft Corporation.
On computer: DESKTOP-ERSOF1L

DISKPART> lis dis

Disk ### Status Size Free Dyn Gpt
-------- ------------- ------- ------- --- ---
Disk 0 Online 223 GB 0 B
Disk 1 Online 465 GB 0 B

DISKPART> lis vol

Volume ### Ltr Label Fs Type Size Status Info
---------- --- ----------- ----- ---------- ------- --------- --------
Volume 0 F DVD-ROM 0 B No Media
Volume 1 System Rese NTFS Partition 100 MB Healthy System
Volume 2 C NTFS Partition 222 GB Healthy Boot
Volume 3 NTFS Partition 450 MB Healthy Hidden
Volume 4 NTFS Partition 454 MB Healthy Hidden
Volume 5 D System Rese NTFS Partition 100 MB Healthy
Volume 6 E NTFS Partition 464 GB Healthy
Volume 7 NTFS Partition 450 MB Healthy Hidden
Volume 8 NTFS Partition 450 MB Healthy Hidden

DISKPART> sel dis 0

Disk 0 is now the selected disk.

DISKPART> det dis

KINGSTON SA400S37240G
Disk ID: C65EA50A
Type : SATA
Status : Online
Path : 0
Target : 0
LUN ID : 0
Location Path : PCIROOT(0)#PCI(1700)#ATA(C00T00L00)
Current Read-only State : No
Read-only : No
Boot Disk : Yes
Pagefile Disk : Yes
Hibernation File Disk : No
Crashdump Disk : Yes
Clustered Disk : No

Volume ### Ltr Label Fs Type Size Status Info
---------- --- ----------- ----- ---------- ------- --------- --------
Volume 1 System Rese NTFS Partition 100 MB Healthy System
Volume 2 C NTFS Partition 222 GB Healthy Boot
Volume 3 NTFS Partition 450 MB Healthy Hidden
Volume 4 NTFS Partition 454 MB Healthy Hidden

DISKPART> lis par

Partition ### Type Size Offset
------------- ---------------- ------- -------
Partition 1 Primary 100 MB 1024 KB
Partition 2 Primary 222 GB 101 MB
Partition 3 Recovery 450 MB 222 GB
Partition 4 Recovery 454 MB 223 GB

DISKPART> sel par 4

Partition 4 is now the selected partition.

DISKPART> det par

Partition 4
Type : 27
Hidden: No
Active: No
Offset in Bytes: 239580741632

Volume ### Ltr Label Fs Type Size Status Info
---------- --- ----------- ----- ---------- ------- --------- --------
* Volume 4 NTFS Partition 454 MB Healthy Hidden

DISKPART> del par override

DiskPart successfully deleted the selected partition.

DISKPART> lis par

The result for the last command was not seen.

Open administrative command prompt and copy and paste: (all at one time)

diskpart
sel dis 0
det dis
lis par

Please post an image of the commands with results into this thread.

Microsoft Windows [Version 10.0.19043.1237]
(c) Microsoft Corporation. All rights reserved.

C:\WINDOWS\system32>diskpart

Microsoft DiskPart version 10.0.19041.964

Copyright (C) Microsoft Corporation.
On computer: DESKTOP-ERSOF1L

DISKPART> sel dis 0

Disk 0 is now the selected disk.

DISKPART> det dis

KINGSTON SA400S37240G
Disk ID: C65EA50A
Type : SATA
Status : Online
Path : 0
Target : 0
LUN ID : 0
Location Path : PCIROOT(0)#PCI(1700)#ATA(C00T00L00)
Current Read-only State : No
Read-only : No
Boot Disk : Yes
Pagefile Disk : Yes
Hibernation File Disk : No
Crashdump Disk : Yes
Clustered Disk : No

Volume ### Ltr Label Fs Type Size Status Info
---------- --- ----------- ----- ---------- ------- --------- --------
Volume 1 System Rese NTFS Partition 100 MB Healthy System
Volume 2 C NTFS Partition 222 GB Healthy Boot
Volume 3 NTFS Partition 450 MB Healthy Hidden

DISKPART> lis par

Partition ### Type Size Offset
------------- ---------------- ------- -------
Partition 1 Primary 100 MB 1024 KB
Partition 2 Primary 222 GB 101 MB
Partition 3 Recovery 450 MB 222 GB

DISKPART>

So far so good.

Let's see if MBR2GPT works or whether there is an error message / code.

Microsoft Windows [Version 10.0.19043.1237]
(c) Microsoft Corporation. All rights reserved.

C:\WINDOWS\system32>mbr2gpt.exe /convert /allowfullOS

MBR2GPT will now attempt to convert the default book disk.
If conversion is successful the disk can only be booted in GPT mode.
These changes cannot be undone!

MBR2GPT: Attempting to convert disk 0
MBR2GPT: Retrieving layout of disk
MBR2GPT: Validating layout, disk sector size is: 512 bytes
MBR2GPT: Trying to shrink the OS partition
MBR2GPT: Creating the EFI system partition
MBR2GPT: Installing the new boot files
MBR2GPT: Performing the layout conversion
MBR2GPT: Migrating default boot entry
MBR2GPT: Adding recovery boot entry
MBR2GPT: Fixing drive letter mapping
MBR2GPT: Conversion completed successfully
Call WinReReapir to repair WinRE
MBR2GPT: Failed to update ReAgent.xml, please try to manually disable and enable WinRE.
MBR2GPT: Before the new system can boot properly you need to switch the firmware to boot to UEFI mode!

C:\WINDOWS\system32>

Microsoft Windows [Version 10.0.19043.1237]
(c) Microsoft Corporation. All rights reserved.

C:\WINDOWS\system32>mbr2gpt / convert /allowfullOS
Invalid argument: /

Invalid arguments


Converts a disk from MBR to GPT partitioning without modifying or deleting data on the disk.

MBR2GPT.exe /validate|convert [/disk:<diskNumber>] [/logs:<logDirectory>] [/map:<source>=<destination>] [/allowFullOS]

Where:

/validate
- Validates that the selected disk can be converted
without performing the actual conversion.

/convert
- Validates that the selected disk can be converted
and performs the actual conversion.

/disk:<diskNumber>
- Specifies the disk number of the disk to be processed.
If not specified, the system disk is processed.

/logs:<logDirectory>
- Specifies the directory for logging. By default logs
are created in the %windir% directory.

/map:<source>=<destination>
- Specifies the GPT partition type to be used for a
given MBR partition type not recognized by Windows.
Multiple /map switches are allowed.

/allowFullOS
- Allows the tool to be used from the full Windows
environment. By default, this tool can only be used
from the Windows Preinstallation Environment.


C:\WINDOWS\system32>

Microsoft Windows [Version 10.0.19043.1237]
(c) Microsoft Corporation. All rights reserved.

C:\WINDOWS\system32>mbr2gpt /validate
ERROR: MBR2GPT can only be used from the Windows Preinstallation Environment. Use /allowFullOS to override.

C:\WINDOWS\system32>mbr2gpt /convert
ERROR: MBR2GPT can only be used from the Windows Preinstallation Environment. Use /allowFullOS to override.

C:\WINDOWS\system32>

My understanding is that mbr2gpt can only be converted during installing windows, Windows Preinstallation Environment.
Which bring me back to the requirement to enable UEFI on BIOS afterward.
Read on aforum that w11 MCT will only install on GPT mode and done.
But on Windows support there is a warning about having to enable uefi on BIOS too, wondering that it only apply to W 10 as by default it install on MBR.

What was done in the BIOS?

Did you turn off CSM?

Oh boy at the best I'll have to do a clean install W11, just did that yesterday.

zbook said:

What was done in the BIOS?

Did you turn off CSM?

Click to expand...

Nope

The MBR2GPT was successful.

Please modify the BIOS.

Turn off CSM.

See this youtube video:

Open administrative command prompt and copy and paste:

reagentc /info
reagentc /disable
reagentc /enable
msinfo32


Please post images of the commands with results into this thread.


Save msinfo32 as NFO (do not save as txt) > post a share link into this thread

or post an image of the opening page



After turning off CSM please post images of disk management and mini tool partition wizard:

Disabled CSM

Microsoft Windows [Version 10.0.19043.1237]
(c) Microsoft Corporation. All rights reserved.

C:\WINDOWS\system32>reagentc /info
Windows Recovery Environment (Windows RE) and system reset configuration
Information:

Windows RE status: Enabled
Windows RE location: \\?\GLOBALROOT\device\harddisk0\partition2\Recovery\WindowsRE
Boot Configuration Data (BCD) identifier: 26f26db7-2b20-11ec-bc16-e0d55e7a8afb
Recovery image location:
Recovery image index: 0
Custom image location:
Custom image index: 0

REAGENTC.EXE: Operation Successful.


C:\WINDOWS\system32>reagentc /disable
REAGENTC.EXE: Operation Successful.


C:\WINDOWS\system32>reagentc /enable
REAGENTC.EXE: Operation Successful.


C:\WINDOWS\system32>

Did we get there?

When available please post these images:

Disk management
Mini Tool


Open administrative command prompt and copy and paste: (all at one time)

diskpart
lis dis
sel dis 0
det dis
lis par

Please post images of the commands with results into this thread.