Thanks Dragonstomper. Just to clarify I have tried several configs and I did have mulitiple IDE to CF UDMA adapters involved.
"Best Config"
I purchased from Best electronics not only a Falcon formatted CF card I also purchased from them a mini IDE to CF converter that is pretty much this model:
http://www.ebay.com/itm/Converts-a-CF-Compact-Flash-memory-card-into-a-desktop-IDE-Hard-Disk-Drive-SSD/192104468793?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649
This configuration : WORKS. It boots and I have a nice crisp but relatively empty bootable image.
Lets call this ide converter IDE_CONVERTER1
Lets call this image FALCON_CF1
This image (FALCON_CF1) does NOT mount on windows, linux or OSX.
"My ST config 1"
I have an UltraSatan from Lotherak that I have a CF card that I downloaded an image from the WWW (no link included to save the guilty).
This image is bootable on an ST. Its also mountable on Linux, Windows and OSX. Its a regular FAT file system. Lets call this image ST_SD1
"My ST config 2"
I have another Ultrasatan unit I purchased from a UK seller. It came with another formatted SD. With lots of files on it. It boots on an ST and is mountable on Linux, OSX, Windows.
Lets call this ST_SD2.
Obviously My ST config 1 and 2 are not really that relevant other than to show I can boot these on an st.
My alternative to IDE 2 CF converter
I also have another IDE UDMA to CF adapter that takes TWO CF cards. Lets call this IDE_CONVERTER2. It looks like one of these:
http://www.ebay.com/itm/2-CF-to-44P-IDE-adapter-2-5-HDD-case-to-dual-CF-slots-converter-CF-card-reader-/111286430097?hash=item19e9302991:g:XvMAAOxyni9TChhX
On my falcon I have tried on falcon:
IDE_CONVERTER1 + FALCON_CF1 ==> works
IDE_CONVERTER1 + ST_CF1 ==> not work
IDE_CONVERTER1 + ST_CF2 ==> not work
IDE_CONVERTER2 + FALCON_CF1(slot1) ==> WORKS
IDE_CONVERTER2 + FALCON_CF1 (slot1)
+ ST_CF1 ==>FALCON_CF1 image visible, no ST_CF1 mounts seen
IDE_CONVERTER2 + FALCON_CF1 (slot1)
+ ST_CF2 ==>FALCON_CF1 image visible, no ST_CF2 mounts seen
I am in asia for a couple of weeks but I will get back to trying some things your suggesting. Though from the your opening comments about having an SD adapter I dont know if you had any faith I even physically plugged any CF card into a Falcon.
I also have a few SCSI solutions sitting around such as this one:
http://www.ebay.com/itm/SCSI2SD-v5-3-5-bundle-with-8GB-SanDisk-microSD-/192171802912?hash=item2cbe550120:g:z4AAAOSwFnFWBHDt
I am waiting for a SCSI adapter to come from china so I can try that as an option. Clearly there is no ACSI interface on a falcon so there is no point trying any of the Ultra Satan devices or my two Megafiles.
C