Problema con el disco

[Vicenç Masanas <vicenc@si.udg.es>]

Durante el boot obtengo este mensaje donde segun parece se desactiva el
DMA:

[...]
PIIX4: IDE controller on PCI bus 00 dev 39
PIIX4: not 100% native mode: will probe irqs later
    ide0: BM-DMA at 0xf000-0xf007, BIOS settings: hda:pio, hdb:pio
    ide1: BM-DMA at 0xf008-0xf00f, BIOS settings: hdc:pio, hdd:pio
hda: FUJITSU MPA3035ATU, ATA DISK drive
hdb: QUANTUM MAVERICK 540A, ATA DISK drive
hdc: CRD-8240B, ATAPI CDROM drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
ide1 at 0x170-0x177,0x376 on irq 15
hda: FUJITSU MPA3035ATU, 3337MB w/0kB Cache, CHS=847/128/63, UDMA
hdb: QUANTUM MAVERICK 540A, 516MB w/98kB Cache, CHS=524/32/63, DMA
hdc: ATAPI 24X CD-ROM drive, 128kB Cache
Uniform CDROM driver Revision: 2.52
Partition check:
 hda: hda1 hda2 hda3
 hdb:

  (aqui espera al menos unos 10 segundos i luego ...)

hdb: timeout waiting for DMA
hdb: irq timeout: status=0x58 { DriveReady SeekComplete DataRequest }
hda: DMA disabled
hdb: DMA disabled
ide0: reset: success
 hdb1
[...]

Alguien sabe que significa y porque pasa?

--
==========================
 Vicenç Masanas
  vicen@si.udg.es
==========================