ERROR: "Cannot find OS partition(s) for disk 1"

Question

Hello!

I am trying to enable secure boot to upgrade to windows 11, but I have to convert my boot drive from mbr to gpt. However when I try to do this via the mbr2gpt program I get this error message. Could anyone help me? I would like to convert without having to backup or clear my boot drive.

Answer 1

1. Please run the V2 log collector and post a share link into this thread using drop box, or google drive

BSOD - Posting Instructions - Windows 10 Forums

BSOD - Posting Instructions | Windows 11 Forum (elevenforum.com)

https://www.tenforums.com/tutorials/3813-language-add-remove-change-windows-10-a.html

https://www.tenforums.com/tutorials/136792-change-display-language-windows-10-a.html#option1

2. Run Tuneup plus > post a share link

https://www.tenforums.com/attachmen...-files-use-bsod-debugging-tuneup_plus_log.bat

Batch files for use in BSOD debugging - Page 2 - Windows 10 Forums

Batch files for use in BSOD debugging - Windows 10 Forums

3. Run disk partition info > post a share link

https://www.tenforums.com/attachments/bsod-crashes-debugging/355861d1640707960-batch-files-use-bsod-debugging-diskparinfo.bat

https://www.tenforums.com/bsod-crashes-debugging/162488-batch-files-use-bsod-debugging.html#post1994162

Batch files for use in BSOD debugging - Windows 10 Forums

4. Run mbr2gpt > post a share link

https://www.tenforums.com/attachments/bsod-crashes-debugging/360509d1645510785-post-problem-reports-here-batch-files-use-bsod-debugging-info_on_mbr2gpt.bat

For share links please use drop box or google drive.

Make sure that links are available without sign in.

https://support.google.com/drive/answer/2424384?hl=en&co=GENIE.Platform%3DDesktop

Answer 2

1. Run command prompt as an administrator. Enter

bcdboot C:\Windows /s C:

Make sure it reports success.

2. Mark Door systeem gereserveerd as inactive.

diskpart

select disk 0

select partition 1

inactive

3. Reboot.

Answer 3

Before running the bcdboot and the MBR2GPT commands, I'd suggest turning off WinRE and deleting the Recovery partition. Otherwise, the EFI partition will sit between the volume C and the Recovery partition and your Recovery partition will be discarded by the OS due to its small capacity. Recovery partitions nowadays should be at least 750 MB to accommodate winre.wim.)

• reagentc /disable
• diskpart
• select disk 1
• select part 2
• set id=07
• exit

Note: Even if the reagentc /disable command fails, please run the remaining commands.

Now, use Disk Management to delete the Recovery partition and merge the unallocated space with the C drive.

Launch msinfo32.exe, and click System Summary. Resize the columns in the right pane to make the entries visible, and post a screenshot of that screen.

(edited)

(edited - Set ID)

Answer 4

This is actually a good idea, but given it's still MBR please use

reagentc /disable

diskpart

select disk 1

select partition 2

set id=07

exit

:)

Answer 5

This is actually a good idea, but given it's still MBR please use

reagentc /disable

diskpart

select disk 1

select partition 2

set id=07

exit

:)

Done. Edited my post. Thanks.