Yes, the DDK used to include the needed debug version of NTLDR too. And yes, it ... | Hacker News

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yuhong on Jan 28, 2017 | parent | context | favorite | on: Finding a bug in Win10 BOOTMGR when chaining to NT...

Yes, the DDK used to include the needed debug version of NTLDR too. And yes, it is done by hex editing looking for the "MZ" signature and trimming everything before that. With BOOTMGR you just set some BCD options to enable the boot debugger.

i336_ on Jan 28, 2017 [–]

Oh of course, the XP DDK.

And MZ-hunting makes perfect sense.

Thanks for the quick reply :) and kudos for figuring out it was the bootloader, hah

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