I’ve seen a lot of bizarre Microsoft patches-of-patches, but the new patches for AMD processors are in a world of their own. The security-only, manually downloadable patches appear to be Meltdown/Spectre patches for machines that were bricked by other bad patches, earlier this month, but they’ve arrived with no instructions — and a strange circular logic.

Last week, Microsoft released two patches, with these official titles:

  • KB 4073578: Unbootable state for AMD devices in Windows 7 SP1 and Windows Server 2008 R2 SP1
  • KB 4073576: Unbootable state for AMD devices in Windows 8.1 and Windows Server 2012 R2

The Win7 KB article says:

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