Issues installing HDDB

[jts]

Hi,

I've got a WDC 2TB in HDDA and she's pretty chockas. Bought me another WDC 2TB to put in HDDB, but several issues trying to get it going:

- HDDA goes 'offline' when I hot-swap new HDDB in
- HDDB FS shows as 'UNKNOWN'. have tried to reformat HDDB, but after a looooong time, it comes back with 'internal error'
- scandisk of HDDB returns 'out of memory' almost immediately
- it seems both HDDA & HDDB will be visible/ok when only a single drive is in
- i know HDDB is ok coz it works fine in my PopCornHour

Currently running V01R03 firmware. I'm SURE I tried doing this years ago when I first bought the thing and it worked fine (diff HDDs), and showed up fine in Disk Management. It would've been on the original firmware back then I guess...

What am I doing wrong this time?

Cheers,
JTS

edit: currently removed HDDA and installed the new HDD into HDDB slot and am re-formatting it again... awaiting it to finish.. it's stuck on 4% (weird) and has been for ages but will let it run over night coz the orange light is flashing furiously still...
edit: ok, the formatting finished over night. No default shares were created. No HDD's visible in Disk Management. HDDB shows in Disk Settings, with a 'blank' FS??? Guess the format to ext2 didn't go real well...
edit: next step - put hddb into hdda slot and re-format again... format went well and quite quick. Default admin/public shares created. All i need is to be able to move hddb back into hddb slot and i'll be happy(er)!!
edit: FAIL! It seems the NAS now "thinks" hddb is now the "master" drive. ie. shares show empty admin/public... + hdda shows as 'UNKNOWN' FS?!?!? WTF?!??! Time to rip out hddb and totally destroy whatever is on it that is messing with this NAS box... o)
FINAL EDIT: Took hddb out, put it into a USB HDD cradle, via WinXP disk manager removed the partition and ALL other information on the drive. Right-click to 'Initialize drive' the drive but did not create a partition. Put it back into the NAS slot hddb and reformatted it - BINGO! We have a winner - finally have 2 x 2TB's running schweeeeeeeeeeeeeet!

Hope this helps some other poor bugger one day...

JTS