GRUB2 Modules (2010)
blog.fpmurphy.com
blog.fpmurphy.com
integrated with all update hooks automatically, vs "I guess we have a package with just the binary somewhere, go figure out the rest on your own"
This happened to mostly work units you dual booted into something that ran another program that ignored the no-man's land of cylinder 0, or had done something with CHS that grub didn't expect.