On Wed, Mar 07, 2018 at 02:13:24PM -0500, Lennart Sorensen wrote: > Trying to use tune2fs -E mount_opts to set some default options, and > can't figure out how to enter two options at once. Lennart, I noticed this a while back, too. I don't believe you can currently. As a workaround, you can use debugfs: debugfs -w -R 'set_super_value mount_opts opt1,opt2,opt3' <dev> Note that when printing superblock info, the e2fsprogs tools call the bit-based default mount options "Default mount options" and the string-based default mount options "Mount options". Tyson