Podivna hlaska od ATA radice

[Prib Pavel]

Na FreeBSD jsem menil disk. Pri startu je vypsana nasledujici hlaska

atapci0: <AcerLabs Aladdin ATA33 controller> port 0xf000-0xf00f irq 0
at device 11.0 on pci0
ata0: at 0x1f0 irq 14 on atapci0
fdc0: <NEC 72065B or clone> at port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on
isa0
fdc0: FIFO enabled, 8 bytes threshold
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
ad0: 19092MB <WDC WD200EB-00CSF0> [38792/16/63] at ata0-master UDMA33
Mounting root from ufs:/dev/ad0s1a
ad0: READ command timeout tag=0 serv=0 - resetting
ata0: resetting devices .. done
ad0: READ command timeout tag=0 serv=0 - resetting
ata0: resetting devices .. done
ad0: READ command timeout tag=0 serv=0 - resetting
ata0: resetting devices .. done
ad0: READ command timeout tag=0 serv=0 - resetting
ad0: trying fallback to PIO mode
ata0: resetting devices .. done

a pak se /dev/ad0s1a mountne a vse pokracuje "sporadane" dal ?!?
V bios-u PC je zapnuta autodetekce disku.
S predchozim diskem, coz byl Seagate cca 4 GB, tento problem nebyl.

    Diky za pomoc.

          Pavel