I don’t have words to describe how cool this tool is: [Wayback/Archive] Kaitai Struct: declarative binary format parsing language:
Archive for the ‘Software Archeology’ Category
Kaitai Struct: declarative binary format parsing language
Posted by jpluimers on 2025/09/18
Posted in Development, Software Archeology, Software Development | Tagged: 1010, 1018, 738 | Leave a Comment »
Fix a “Automatic Repair couldn’t repair your PC” on an UEFI system: when Windows cannot be located
Posted by jpluimers on 2025/08/22
I got the below error when booting a Dell Optiplex 7060 Micro, a machine not just supporting supporting UEFI but preferring it, on which I had copied a backed-up disk image, then moved the hidden Recovery partition to the end of the physical disk (to make room to extend either the OS or DATA partitions).
Fixing it lead me to a trip that was on the boundary of software archaeology, so this blog post has a truckload of archived links to information that is still relevant, but for which the original links have long vanished due to link rot or (often worse) part of the historic information got lost because of migration to new tooling forgot to cover important additions (especially in comments).
One thing that I had to unlearn was MBR disk basics, for instance the fact that on GPT disks a partition can be active (they can only be on MBR disks, but despite UEFI supporting both MBT and GPT, GPT disks are way more common and required). The same holds for partitions having a boot flag: that too only applies to MBR disks. For the same reason, bootrec is only useful for MBR disks. More details towards the end of this blog post. CSM (Compatibility Support Module) booting is the UEFI way to simulate BIOS boot for operating systems that do no support UEFI.
Back to the error at hand:
Posted in Development, History, link rot, Power User, Software Archeology, Software Development, Windows, Windows 10, Windows 11, Windows Server 2003, Windows Server 2008, Windows Vista, Windows XP, WWW - the World Wide Web of information | Tagged: 1 | Leave a Comment »





