disabling ata devices

[JM]

Björn König wrote:

> JM wrote:
>
>> from dmesg -a:
>> ...
>> ad0: 19077MB <ST92011A/3.04> [38760/16/63] at ata0-master UDMA33
>> acd0: CDROM <CD-224E/1.7A> at ata0-slave UDMA33
>> Mounting root from ufs:/dev/ad0s1a
>> ...
>>
>> when probing acd0 the system waits for about 10-20 seconds. [...]
>
>
> Are you really sure that your CD-ROM drive is the originator of the 
> problem, i.e. it works fine if you unplug your drive physically?
>
> Björn

yes, there is no pause when it's unplugged......