Partition Strangeness After Clean XP SP2 Install

I recently did a clean XP SP2 install on my 2nd PC. It had 2 hard disks and
I partitioned them as follows when installing the XP.

1. SATA 160GB partitioned into 4x40GB drives.
2. IDE Master 160GB as a single disk.

XP somehow assigned D: to the IDE drive, so I manually changed drive letters
in disk management so that:
SATA 160GB --> C, D, E & F
IDE Master 160GB --> G

Then, I added an IDE Slave 160GB assigned as H.

Q1. Obviously, XP correctly recognizes that C: is primary and D, E & F are
logical. However, XP reports that G: is primary and H: is logical. I didn't
create any partitions on the IDE hard drives. So, why is the Master IDE
drive (G is primary and why is the Slave IDE drive (H logical?

Q2. "Disk Management" in XP reports G drive as "disk 0," H drive as "disk 1"
and the SATA drive where the OS resides as "disk 2." Shouldn't the OS drive
be "disk 0"???

So, I'm worried that partitioning may have been screwed up. Can anyone shed
some light on these issues? Thanks in advance.