Hardware detection

[Wojciech Puchar]

> That is usually what happens when the disk controller is one that FreeBSD
> does not have support for, so it treats the controller as a "Generic" ATA
> controller.  Should normally work fine albeit with somewhat suboptimal
> performance.  (And even though it says UDMA33 a SATA controller should still
> work at SATA150 speed, so the performance penalty should not be so severe.)
>
in my case it was slow and unstable, up to 15 minutes between crashes.