3 ms·

Thanks! It totally makes sense that you'd have a mechanism for booting an image like that, considering how heavily mainframes use virtualization and how insane

Thanks! It totally makes sense that you'd have a mechanism for booting an image like that, considering how heavily mainframes use virtualization and how insanely backward compatible they are.

tyingq 6y ago
Right, it's klunky, but doesn't seem much different from what you see around BIOS/UEFI/grub and so on.
- meepmorp 6y ago
  I find something appealing about how the vestigial remnants of physically punched cards are retained to boot the OS, even though they don't really make sense any more. It's weirdly reminiscent of biological evolution, where systems get retained and repurposed even if they're not the most efficient way something could be implemented.