Bug#2016: SysVinit, mount] SysVinit uses non-existant option for umount
> Package: sysvinit
> Version: 2.57b-0
> Package: mount
> Version: 2.5-1
> I'm not sure which package this reports belong to.
> The new umount (from mount-2.5-1) does not have a '-n' option.
> This option is used by some of the scripts from the sysvutils package.
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.
I would suggest the sysvinit scripts should indeed be changed.