Bug#2016: SysVinit, mount] SysVinit uses non-existant option for umount
> I believe the flag may indeed be unnecessary; the source for umount indicates
> it will not attempt to update /etc/mtab when unmounting the root partition,
> regardless of its read/write status, because the partition ends up being
> remounted read-only by the kernel anyway.
That's a good feature. However, it would have been nice for it to at
least parse and throw away the "-n" flag so that the halt and reboot
scripts didn't break.
Bruce Perens <Bruce@Pixar.com> Pixar Animation Studios