Can Not Unhide Partitions

I have the following HD/Partion configuration:

HDAP1 local volume Primary
HDAP2 recovery (non_os) Primary
HDAP3 vista_os Primary, Active

HDBP1 xp1_os Primary, Active

HDCP1 xp2_os Primary, Active
HDCP2 xp3_os Primary
HDCP3 reserved (non_os) Primary
HDCP4 storage Logical

for a total of 3 Hard Drives and 8 Partitions

I use the Bios to select the boot HD and use a bootable DD11H CD to change Active Partition to access the OSs. If I boot with HDAP3 or HDCP1, I can see all 8 patitions. However if I boot with HDBP1, HDAP2 and HDCP3 are not visible in the My Computer window. Booting with the DD11H CD indicates HDAP2 and HDCP3 are NOT hidden.

How do I make HDAP2 and HDCP3 visible when booting with HDBP1?

ACTIONS PRIOR TO PROBLEM:
1. I installed DD11H with OS Selector on HDC but then removed. Could hide/unhide partions.
2. I installed DD11H w/o OSS on HDB but then removed. Could hide/unhide partions but hid HDAP2 and HDCP3 prior to DD11H removal.
3. Booted with DD11H CD and did an unhide on partitions HDAP2 and HDCP3; committed. Both indicated as visible.

The problem was later discovered later while booting with HDBP1.