So I've been doing a scan of the code versus the early ATA specifications (English translation not the original Latin ;)) I've found a couple of problem cases we don't deal with but I'm not sure matter, and an inconsistency #1 We assume identify works. Early ATA actually lists this command as optional #2 We don't allow for INIT_DEV_PARAMS failing which it may do on some early IDE pre ATA devices and the inconsistency We check ATA < 4 || non-LBA capable when deciding whether to issue INIT_DEV_PARAMS. ATA 4+ however mandate LBA so the second case isn't theoretically at least possible. Aside from those cases the command issue (but not the detection paths) appear to be clean for everything from ST412 upwards providing a drive is being used in 16 head mode and does its own write precompensation selection. So in theory we can persuade libata to drive original MFM/RLL disks with relatively few changes - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
