Dos-2-Dos 3.0 problem

[Tymo500]

I have Amiga 500+ ECS with KS1.3 after swapping.
I have problem with Dos-2-Dos 3.0.
Fomating MS-DOS disks OK
Copying to DF0: as MS-DOS drive OK [from RAM:]
Copying to RAM: from MS-DOS disk...BAD_______
To PC : OK
To Amiga : BAD___
Dir cammand OK
RAM: works OK. I copied to RAM: from Amiga CLI files directly befeore D2D running.
Then to MS-DOS disks under D2D. OK. Files has been recorded. And then Amiga do not finish copying to RAM:
Drive still spinning....<end> D2D cannot create files in RAM:

What is wrong?

Has anyone had this problem before?

[Tymo500]

Floppy disk records properly. My hard-PC can read it. What is full installation procedure? Maybe something is missing on Workbench disk.
Which files are required to full complete set? D2D

[Tymo500]

I hope, I got it.
It's probably RAD: the disk is needed.

RAD: disk uses ramdrive.device and works as drive device.
RAM: uses handler only. [ram-handler]
D2D works with drives. Iwill check it out.