A lot of questions, I try to do them in order.
SDX: Yep, third party. You need to config their rom-file to your needs.
I.E. change config.sys and/or autoexec.bat.
I tried SDX 4.48 a few days ago (using the FAT32-loader loading "SDX448_myideiiram.rom").
It works nicely with MyBIOS from ROM.
SDX uses OSRAM also when you select "NONE", so working with MyBIOS from RAM is almost impossible.
The last version 4.9-B16 is very stable, you can re-flash your cartridge using the MyIDE-][.bin file.
To put it in your 32-in1, you need to do some work. Remove the flash-chip, use a programmer etc......
But for common usage, the MyBIOS 4.9-B16 works very well from OSRAM (the upper 16k beneath the stock OS).
viewtopic.php?f=17&t=1585Here you also find a rough manual
Learning is the key-word, just try and see, nothing can go wrong.
Unless you accidentally erase your flash-rom with the diagnostic-software.... (and have no means of SIO2something to restore it)
I developed the IDE-port back in 1999, Steve did flash-cartridges, we combined forces when I stopped making them.
8GB:
Best is to re-partition the card using MyBIOS 4.9-B16 (!)
Back-up your FAT-partition first.
Go to the MyIDE menu and do init, manual, detect=auto, APT and FAT yes, then press enter until finished)
Now you have a card prepared and ready for future use.
~2Gb (25%) APT for SDX
~2Gb (25%) FAT for the FAT32-loader
~4Gb (50%) last but not least MyBIOS
The INIT makes only the containers or reserved space in the MBR (master boot record).
You need to format on your PC the FAT-partition and with SDX the APT-partition.
MyBIOS-partition is done during the INIT.
You can use the quick-guide to setup a DOS partition in MyBIOS-space.
It can handle 14 logical partition, assigned to maximum 8 drives, you can hot-swap and change drive-numbers as you go.
It can handle upto 65535 disk images in image-mode, card-size is the limiter here.
Each logic partition can be 16Mb max (65535 sectors), needing a highcapacity DOS to access them.
For easy access on your PC. use this 3rd party tool:
viewtopic.php?f=17&t=1592So, enough for now, start your learning curve and explore the power of MyIDE-][