Lennart Poettering has been working on a new systemd feature called systemd-storagetm that is inspired by the Apple macOS “Target Disk Mode” feature.[…]
This is similar to Apple’s Target Disk Mode as a boot option on Macs that allows other systems to then easily access it as an external device. The systemd intent with this Storage Target Mode is to make it easier to debug a broken system with very few dependencies while being able to access the raw block device of the broken system via the network. This may also make it easier to migrate from one system to the next. By having access to the raw block device via NVMe-TCP, it can be easy to use the “dd” command or similar for copying the drive.
Target Disk Mode has long been one of those amazing Mac features that should’ve come to PCs decades ago, so I’m incredibly glad Poettering is working on it. This will make it so much easier to troubleshoot, get files off a broken system, and so on, without having to move hard drives around or boot into live CDs.