Using us standard devices with TRU64 UNIX 51.b

[Jacomy]

I have some problems with a new product managing optical device : us design.

To initialize/mount /dismount a disk i use the commands :

initialize :
ussutil initialize UDF102

Mount :
ussutil mount
ussmount localhost:

Dismount :
umount
---> Here it seems that 2,3 or 4 of the following commands are mandatory to dismount the disk :
ussutil dismount
ussutil dismount
ussutil dismount

Is the iteration normal ?

(Using : ussutil dismount force , the dismounting is performed with only one command, but it is dangerous because if we repeat thiscommand the driver fails !!)