[gentoo-user] "Unable to change data mode on remount"

[Michael Mol]

So, after my borked udev upgrade, I had some data corruption; I found
one email containing half of another while in Thunderbird. Either I
hit a software bug, a hardware bug or an unsafe unmount. Of the three,
unsafe unmount is by far the most likely, so I added "data=ordered" to
my fstab entries for my / and /boot mounts.

Go to reboot this morning, and X won't launch, and / is mounted
read-only. Hidden away in dmesg is a line warning I can't change data
mode on remount.

So, if I can't set a data= parameter in /etc/fstab, where *do* I set it?

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:wq