Disable read/write caching to disk?

[Bjoern Koenig]

Bjoern Koenig wrote:
> Eric Anderson wrote:
> 
>> Is it possible to disable all read and write caching to a disk?
> 
> You can disable write the cache by adding the line
> 
>   hw.ata.wc="0"

I assumed that you use ATA. If you use SCSI devices then read at least 
the manpages da(4) and camcontrol(8).

Björn