when root partition is mounted in boot time?

[saeedeh motlagh]

hello all,

i have a question about root partition. i want to know when this partition
is mounted in bootstrap process? is root mounted before kernel loading?

more over, i heard that root partition is mounted read-only in boot process
before loading kernel. after that kernel is loaded and all other things are
done (such as mounting other devices, running rc scripts, ...), then the
root in unmounted and remount read-write. is it true? if not, what exactly
happened for root partition in boot time and when is mounted?

t
​hanks in advance
*s.motlagh*
**