Hi J J, J J writes: > Thanks again Chris, > > Its btrfs-progs 4.7 > > I spent an hour just trying to figure out how to update it, and still unsuccessful : ( > > I’m running OMV 4, it’s debian. > > Sorry for such noob questions but can you tell me simplest way to update btrfs-progs? > OMV 4 appears to be based on Debian 9 (stretch). If it's truly Debian, then it should be safe to use backports. If you s/buster/stretch/ with the following instructions you will have access to btrfs-progs 4.20, the last supported version for stretch-backports. https://backports.debian.org/Instructions If you can upgrade to OVM 5, then you can use buster-backports and will have access to btrfs-progs 5.7 today, and newer versions as they pass migrate to testing and are then backported to buster (Debian 10). If you want to try building the buster-backport on OMV 4, try: dget http://deb.debian.org/debian/pool/main/b/btrfs-progs/btrfs-progs_5.7-1~bpo10+1.dsc cd btrfs-progs-5.7 apt-get build-dep ./ dpkg-buildpackage -us -uc but I haven't tested this, and it may not succeed (IIRC you'll need newer libzstd and other things), and of course it's easier to use recent live media as Chris Murphy suggested. Regards, Nicholas