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virtio-blk
The virtio virtual disk — how a guest OS reads and writes storage inside a virtual machine.
virtio-blk is the block-device flavor of virtio, presenting a virtual hard disk to the guest operating system. The guest's driver talks to it efficiently because it's designed for virtualization rather than imitating physical disk hardware. It's the device mzOS2's kernel uses for block storage.
See also
- virtioA standard way for a virtual machine to talk to fast, simplified virtual hardware.
- two-stage bootloaderA boot design where a tiny first program's only job is to load a bigger, smarter second program.