Translating a SCSI device ID to SCSI::x

SCSIFS has a function to convert a SCSI Device ID to a drive number in the form of MapDevToDrv but it’s not publicly exposed as far as I can tell.

How can I translate a device ID to a FileCore drive number, when SCSIFS_Partitions 1 isn’t available?

I think the answer is “you can’t”. FS stuff on RISC OS. You have to love that mess.

Would the answer to this question (if, possible) solve the issue that when we have two or more SCSI ‘discs’ on a Pi system, we can not reliably specify which drive the system is going to boot from?

I think the answer is “you can’t”

I cheated and am scanning SCSIFS for MapDevToDrv and am calling it directly :| – desperate times

FS stuff on RISC OS. You have to love that mess.

Quite. I dislike the way SCSI is used as a virtual dumping ground for every device that doesn’t have a dedicated filesystem. SCSI should be for physical SCSI devices only, USB devices should hang off a “RemovableFS” that has a better way of linking a physical device to a FileCore drive number that doesn’t involve made up SCSI bus/device ID’s – it’s idiotic.

Would the answer to this question (if, possible) solve the issue that when we have two or more SCSI ‘discs’ on a Pi system, we can not reliably specify which drive the system is going to boot from?

No, that requires the OS to run a Boot Manager before it starts the boot process. This is built into the UEFI / GPT spec, but there’s no bounty currently covering it – it should probably be included in the Partition bounty as that explicitly specifies GPT.

Surely you can examine the SCSI device using the device ID and read its name (and disc number). HForm must do something similar?