How do I get RAID 1 to work?

[Bruce Jackson <bjackson@pobox.com>]

Could someone please help me to get RAID1 to work under 2.0.36.

I have compiled the kernel with RAID support.  When the computer boots
up the md driver and RAID 1 are loaded.  The problem happens when I try
and mdrun /dev/md0.  If I use the mdutils package, I can create the
/etc/mdtab entry.  If I mdadd -a it works.  When I mdrun -a I get the
following error:  /dev/md0:  Invalid argument.

The hardware is two IDE drives.  The kernel was compiled using the
kernel-source-2.0.36-2 source.  Any help would be appreciated.

-- 
Bruce Jackson

Linux:  because reboots are for hardware upgrades!