macOS

When using Virtualization.framework to virtualize macOS VMs, I occasionally have no use for the GUI, and even get frustrated at the slowness (especially when scrolling in Terminal.app). Since Virtualization.framework supports adding a VirtIO serial device, I decided to try doing that, but when I booted the VM, nothing showed up. After some searching, I found that I needed to modify /etc/gettytab and add a file to LaunchDaemons to start a getty on the serial console from this answer....

If you’ve been using and/or developing on macOS for some time, it’s possible that you’ve heard that macOS uses the Apple File System (APFS). You’ve possibly also heard of its numerous benefits over traditional filesystems, such as copy on write, cloning (where unchanged blocks can be shared between multiple files), and, the topic of this post, sparse files. Sparse files are files with blank sections, and are used for virtual machines with Apple’s Virtualization....