Other wd0 and ada0

[Shivaprashanth]

man page for wd(4)

wd - FreeBSD 4.5-RELEASE Manual Pages

www.freebsd.org

says it supports generic IDE controllers. and in the note section, it says that
'This driver will soon be completely replaced by the ata and ad drivers.'

So may I assume that wd and ada controllers are one and the same?
Is read/write to wd and ada drives same?

 

[SirDice]

The wd(4) driver got deprecated a long time ago. I think the change happened somewhere around the 4.x era. Why do you need to know if they're the same?

 

[phoenix]

What you're probably looking for is cam(4), the Common Access Method for SCSI/ATA subsystems. Pretty much all disk access is done via cam(4) these days. It's what provides the ada(4) (IDE/ATA/SATA) and da(4) (SCSI disk) drivers, for example.