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SedirOS 1.1 · published 2026-11-08 · release notes and all files

1. Download the installer ISO

amd64

Most PCs and servers (Intel, AMD), and VMs on them: VirtualBox, VMware, Proxmox, QEMU/KVM, Hyper-V.

Download ISO 248 MB

Mirror: SourceForge

SHA-256 d1486265fd7a4ad4b55921bc3fba9358808ae7bc1461972f5f708b5d189816d7

arm64

Macs with Apple Silicon (in UTM, Parallels, VMware Fusion) and ARM servers.

Download ISO 256 MB

Mirror: SourceForge

SHA-256 95a0d7beca55dbeebf90370a74b0496e083c9a3d59b90ce3711ef14d07c5bb1d

2. Check the download

Compare the checksum with the one above:

shasum -a 256 sediros-*-install-*.iso      # macOS
sha256sum sediros-*-install-*.iso          # Linux

All checksums: SHA256SUMS.

3. Install

  1. Boot the ISO. On a PC: write it to a USB stick (balenaEtcher, or dd) and boot from it in UEFI mode. In a VM: attach it as a CD/DVD, with UEFI firmware and the guest type Linux.
  2. Start the installer in the live session that opens: sudo sediros-install install
  3. Answer the questions: disk, hostname, keyboard, user, password, SSH key (optional), disk encryption passphrase.
  4. Power off and remove the ISO (in a VM: clear the CD/DVD drive while the VM is off). Otherwise the installer starts again.
  5. Boot from the disk, enter the encryption passphrase, log in.
  6. No SSH key given? Run sudo sediros-ssh-enroll and follow it: it lets you add your key with ssh-copy-id.

Details and troubleshooting: Installing to disk.

Or: SedirOS VMs on your Mac or Linux machine

brew tap sediros/sediros https://github.com/sediros/sediros
brew trust sediros/sediros
brew install sediros
sediros launch dev
sediros shell dev

See Trying SedirOS in a VM.

Updates

Installed systems update themselves: Debian's security updates from Debian, SedirOS's own packages from the SedirOS apt repository.

SedirOS is not affiliated with or endorsed by the Debian project. Debian is a registered trademark of Software in the Public Interest, Inc.