Problem with DreamShell

[alimadhi]

hi guys
i have problem with (DreamShell 4.0 RC 1 by SWAT) I downloaded Resident Evil Code Veronica (sdiso) from this site: http://theisozone.com/downloads/dreamcas...sdiso-usa/ to folder i named it to a1 on SD and my Dreamcast modded to load Bios From SD it's doesn't work and i change boot mode from ISO Loader to All attempts nothing happen and a lots of games not work just castlevania also downloaded it from theisozone.com. what i should do?


My attempts
- iso folder name in SD card ISO, iso and a1
- Change the SD card 4GB, 8GB and 16GB FAT32
- Install DreamShell 4.0 Beta 4 boot from Bios.
- Install DreamShell 4.0 Beta 3 boot from Bios.
- Boot DreamShell 4.0 Beta 3&4 boot from CD.
- Change Region to Japan, USA and Europe.
- I rename the file from RECV_CD1.iso to r1.iso

video :
http://www.youtube.com/watch?v=S4cPy5Gg8RM