I have HP A180c serwer with 2 PCI slots.
System HPUX 10.20 creates /dev/ttyd… & /dev/ttye… special files. I want to get ttya… and ttyb… files. When I try change the letter (under dgdxb_mkdev_app) I receive a message: “Unable to change the device letter. The failure probably occured because the devices with the new device letter already exist.”
There is no other PCI cards in serwer.
ioscan -fn shows:
serial 0 8/0/1/0 dgdxb CLAIMED INTERFACE PCI(114f0040) – 1
serial 1 8/0/2/0 dgdxb CLAIMED INTERFACE PCI(114f0040) – 2
lsdev shows:
170 -1 dgdxb serial
How change the letter ?
This typically means that there are entries in /dev/ beginning with ttya, ttyb, pra, prb, cua and/or cub.
Try removing these devices from /dev then try renaming.