I have the RPI4 QUAD SATA HAT, currently with 4 disks connected. Is there a fixed order in which the SATA ports 1-4 are mapped to /dev/sda-/dev/sdb?
I would have expected port 1 to sda, port 2 to sdb etc but that apparently isn’t the case. Maybe it depends on how fast the individual drives start up? Currently I have:
<edit, I had the ports wrong>
- SATA port 1 -> /dev/sdc
- SATA port 3 -> /dev/sda
- SATA port 2 -> /dev/sdd
- SATA port 4 -> /dev/sdb
With if i’m not mistaken SATA port 3 and 4 being on one WD USB to SATA converter and SATA port 1 and 2 being on the other WD USB to SATA converter?
The reason I’m asking is that I want to boot from USB with the RPI’s beta firmware a particular USB disk. I’ll swap the one I want to boot from to SATA port 2 I guess.