root raid question

[Olivier Thibault <ot_(_at_)_mathlabo_(_dot_)_univ-poitiers_(_dot_)_fr>]

Hi misc,

First of all excuse my poor english.
I'm a newbie in openbsd but i do like it. Thanks a lot for it.
I would like to set a box with a root raid (raid 1 with 2 IDE drives).
I read the raid and raidctl man pages but i'm not sure how to do it.
The man pages say :

"A typical RAID 1 setup with root on RAID might be as follows:

     1.   wd0a - a small partition, which contains a complete, bootable,
basic
          OpenBSD installation.

     2.   wd1a - also contains a complete, bootable, basic OpenBSD
installa-
          tion.

     3.   wd0e and wd1e - a RAID 1 set, raid0, used for the root file
system.

     4.   wd0f and wd1f - a RAID 1 set, raid1, which will be used only
for
          swap space.

     5.   wd0g and wd1g - a RAID 1 set, raid2, used for /usr, /home, or
other
          data, if desired.

     6.   wd0h and wd0h - a RAID 1 set, raid3, if desired."

Is this mean that i must :
- install the box with only one drive
- then take this drive away, put another and reinstall
- then put both drive, boot
- then setup the raid device on both drive
and then ?
how do i do to install the root filesystem ?

i'm confused ... may be can i find somewhere more documentation to do
this ...

Thanks for your help

Best regards,

Olivier