Comments on Writing Boot Sector Code

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non-entity said:

Boot sector programming has always seemed like one of the cooler ways to play with writing lower level code, but am I wrong to assume it won't work on systems with UEFI?

04 Aug 2019 16:31 GMT (#1 of 4 comments)

leo89 said:

It may work with UEFI if it's set to compatibility mode.

04 Aug 2019 17:00 GMT (#2 of 4 comments)

Frutiger said:

That's correct. UEFI firmware will execute a PE image (the same format that Windows executables use) on a FAT32 file system, and can access UEFI services to execute a kernel.

The UEFI firmware may support a CSM (compatibility support module) that can boot a legacy BIOS loader.

04 Aug 2019 17:02 GMT (#3 of 4 comments)

Randall Degges said:

This is a great introduction to writing boot sector code! Really brings back memories. So awesome.

03 Dec 2019 15:57 GMT (#4 of 4 comments)
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