ISO's No Longer Bootable on Version 2025.03.10349

[Gavlar]

Windows 11 24H2 ISO files are no longer bootable with Secure Boot turned on.
Have tried updating the bootloaders during the Update Integration, but this hasn't changed anything.

Dropped back to 2025.2.10293 and all working again.

Any advice appreciated

 

[nuhi]

Hi,

the SecureBoot updated boot sector being used by the new version will be put behind Update boot managers option in the future.
Because it is very convoluted how it works, machine needs to be patched as well, which is not yet automated by NTLite, it's a user's choice which Microsoft describes here.
Sent you a test version, let me know how it goes, don't do any extra locking of the bios, let's postpone that until, and if it becomes mainstream.

 

[xam]

Hi,

the SecureBoot updated boot sector being used by the new version will be put behind Update boot managers option in the future.
Because it is very convoluted how it works, machine needs to be patched as well, which is not yet automated by NTLite, it's a user's choice which Microsoft describes here.
Sent you a test version, let me know how it goes, don't do any extra locking of the bios, let's postpone that until, and if it becomes mainstream.

Hi Nuhi, could you send me the test version as well? Would like to try.

 

[Gavlar]

Hi,

the SecureBoot updated boot sector being used by the new version will be put behind Update boot managers option in the future.
Because it is very convoluted how it works, machine needs to be patched as well, which is not yet automated by NTLite, it's a user's choice which Microsoft describes here.
Sent you a test version, let me know how it goes, don't do any extra locking of the bios, let's postpone that until, and if it becomes mainstream.

Hi,
All good with the test version, no issues booting with SecureBoot enabled anymore.

 

[nuhi]

Thanks, uploaded publicly to avoid any potential issues until the requirement for the new boot sector is more understood.