Macintosh Performa 630 DOS Compatible

[GianDO]

Hi,
I have a Performa 630 DOS Compatible computer. On this computer, in addition to the original internal cdrom, there is also a third-party external SCSI CD ROM that works perfectly on macOS 8.1 with the FWB software. The external CD-ROM is a Pioneer DR-466 recognized as DR-U12X.

In this system is also installed the DOS subsystem which works correctly except for the external CDROM, unfortunately I have not yet found a way to detect it on dos subsystem. I don't think ASPI drivers are used at least for the original internal one for sure not. How could I make it work?


Thanks

 

[AndiS]

Could you try an external Apple CDROM, maybe it is a driver issue?

The Apple drives (Disk and CD) are passed through to the PC Card via Apple's System Extensions. Maybe it only works with original Apple drives.

It could also be, that only one CDROM is provided for the PC side? You could disconnect the internal drive to test that idea.

 

[GianDO]

I tried an external Apple CDROM, on the PC side when an internal CDROM and an external CDROM are connected, priority is given to the external one. If instead of the external Apple CD-ROM I connect an external third-party CD-ROM then on the PC side priority is given to the internal one (the external third-party CD-ROM is still seen by MacOS 8.1 through the FWB driver). It will definitely be a driver issue on the PC side.
I know that up to 7 external drives including hard drives can be managed externally.

 

[micheledipaola]

If CDROM is attached to the SCSI port, are SCSI drivers present in the DOS / windows boot?

 

[GianDO]

If CDROM is attached to the SCSI port, are SCSI drivers present in the DOS / windows boot?

I don't know if you know how the dos subsystem works on the Performa 630 dos compatible. The PC hardware card communicates with the mac hardware through the software PC Setup installed in MacOS. It seems be there are no SCSI drivers for the dos subtema or at least I have not found them ..