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GalliumOS 2.1 was released on 2017-02-28. Release Announcement.
You can install GalliumOS from an installation image downloaded below, or you can dual-boot GalliumOS alongside ChromeOS by installing with chrx.
See the wiki for full instructions.
Also check our hardware compatibility list to make sure your device is supported, which build to download, and any issues reported for your model.
Please verify that your download matches.
md5:b865b1ee714e6d82b83c33f15d420534 galliumos-baytrail-2.1.iso md5:ec2e62f73adb5c1fede33e4a0d57fd44 galliumos-braswell-2.1.iso md5:531732e01a04d426b4b632b8a870e307 galliumos-broadwell-2.1.iso md5:5ac56fbb7510ac391261d841ee37a3ce galliumos-broadwell-cbox-2.1.iso md5:2d002a4401ae0b108d1523374fabc40b galliumos-haswell-2.1.iso md5:edaacba0531425906a9f914322ec34c6 galliumos-haswell-cbox-2.1.iso md5:4c4133378de81948e7fb81938d389119 galliumos-samus-2.1.iso md5:55704170d74733579dea6b93089e5370 galliumos-sandy-2.1.iso md5:a79ae9e2e58aa86903605c5677a384c4 galliumos-skylake-2.1.iso
More checksums (GPG-signed): MD5, SHA-1, and SHA-256.