Arch Linux
https://archlinux.orgAs linux-lts moved to the 5.10 version, all official kernels of Arch Linux now support zstd compressed initramfs images, so mkinitcpio is switching to zstd compressed images by default with version 30, which is currently on [testing].
Arch Linux - Downloads
archlinux.org › downloadArch Linux Downloads Release Info. The image can be burned to a CD, mounted as an ISO file, or be directly written to a USB stick using a utility like dd.It is intended for new installations only; an existing Arch Linux system can always be updated with pacman -Syu.