Windows 11 secure boot

[HarleyBacardi]

When i go on pc health check it says for windows 11 to turn on secure boot, but if i go in the bios i need to turn off csm for it the be enabled. but when i disable csm windows 10 won't boot properly and goes straight back to the bios without any other signal.

 

Can someone maybe help on what i can do/try to fix this?

[whispous]

You should consider installing Windows fresh, with the correct settings applied in BIOS before installation.

[Mojo-Jojo]

7 minutes ago, HarleyBacardi said:

When i go on pc health check it says for windows 11 to turn on secure boot, but if i go in the bios i need to turn off csm for it the be enabled. but when i disable csm windows 10 won't boot properly and goes straight back to the bios without any other signal.

 

Can someone maybe help on what i can do/try to fix this?

I've had this problem before, where turning on secure boot caused my system to not be able to boot. If I recall correctly, it was because my boot drive was not set up with the GPT partition table.

 

There's a command in Windows to convert your MBR to GPT table. I don't remember which I used, but it should be possible to do without data loss. Pretty sure it was mbr2gpt.

 

Edit: This tutorial seems familiar to me. It seems to do what I did back then, at least.

[Senzelian]

Just now, Mojo-Jojo said:

I've had this problem before, where turning on secure boot caused my syustem to not be able to boot. If I recall correctly, it was because my boot drive was not set up with the GPT partition table. There's a command in Windows to convert your MBR to GPT table. I don't remember which I used, but it should be possible to do without data loss.

^ This.

 

Your OS' drive is partitioned in MBR and needs to be partioned in GPT and as mentioned there is a command within Windows to convert it.

 

https://learn.microsoft.com/en-us/windows-server/storage/disk-management/change-an-mbr-disk-into-a-gpt-disk

[Mojo-Jojo]

Just now, Senzelian said:

^ This.

 

Your OS' drive is partitioned in MBR and needs to be partioned in GPT and as mentioned there is a command within Windows to convert it.

 

https://learn.microsoft.com/en-us/windows-server/storage/disk-management/change-an-mbr-disk-into-a-gpt-disk

The default diskpart commands, at least from the source material, seem to start a new partition table, incurring data loss. I specifically remembered there being a way without data loss. I've updated my post; there's a command to convert a disk with data retention.

[Senzelian]

13 minutes ago, Mojo-Jojo said:

The default diskpart commands, at least from the source material, seem to start a new partition table, incurring data loss. I specifically remembered there being a way without data loss. I've updated my post; there's a command to convert a disk with data retention.

 

Yes they mention that here:

Quote

Converting using a command line

 

Use the following steps to convert an empty MBR disk to a GPT disk. There's also a MBR2GPT.EXE tool that you can use, but it's a little complicated - see Convert MBR partition to GPT for more details.

 

They also mention MBR2GPT.exe and if you click the link to that it says:

Quote

MBR2GPT.EXE converts a disk from the Master Boot Record (MBR) to the GUID Partition Table (GPT) partition style without modifying or deleting data on the disk.

 

Edit: What they're doing in the tutorial that you've posted is to use that .exe to convert it. Either way is correct  

 

[Mojo-Jojo]

1 minute ago, Senzelian said:

They also mention MBR2GPT.exe

Completely overlooked that, I was trying to retrace my steps from a while back instead

[Senzelian]

Just now, Mojo-Jojo said:

Completely overlooked that, I was trying to retrace my steps from a while back instead

It's easy to overlook. Microsoft's walls of text are taller and longer than the chinese wall.