After updating Fedora, my drives are switched between /dev/sda and /dev/sdb

Question

I have two hard drives:

• internal (SATA)
• external (USB).

Before updating Linux (Fedora), the internal drive was in /dev/sda and the external drive in /dev/sdb. Now, after updating, those two are switched.

How do I move the internal drive back to /dev/sda?

Answer 1

You can statically assign /dev nodes using udev rules, this should work for you if you wish to switch /dev/sdb and /dev/sda.

http://www.thelinuxdaily.com/2010/01/statically-assign-dev-nodes-to-hardware-devices-in-linux/

Answer 2

Put simply: You don't. If you want persistent names to identify hard disks, you use the disk ID with the symlinks provided in /dev/disk/by-id.