(1) As noted in other messages, my machine boots up the Promise
chipset as UDMA(100)
hde: 80041248 sectors (40981 MB) w/2048KiB Cache, CHS=79406/16/63, UDMA(100)
(2) hdparm recognizes it as UDMA5 with 27 MB/sec speed
/dev/hde:
 
 Model=Maxtor 54098H8, FwRev=DAC10SC0, SerialNo=K80EP5NC Config={ Fixed }
 RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=57
 BuffType=DualPortCache, BuffSize=2048kB, MaxMultSect=16,MultSect=off
 CurCHS=16383/16/63, CurSects=16514064, LBA=yes,LBAsects=80041248
 IORDY=on/off, tPIO={min:120,w/IORDY:120},tDMA={min:120,rec:120}
 PIO modes: pio0 pio1 pio2 pio3 pio4
 DMA modes: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5
 Timing buffered disk reads:  64 MB in  2.31 seconds = 27.71 MB/sec
(3) /proc/ide/pdc202xx sees it as UDMA 4
                                PDC20265 Chipset.
------------------------------- General Status ---------------------------------
Burst Mode                           : enabled
Host Mode                            : Normal
Bus Clocking                         : 33 PCI Internal
IO pad select                        : 10 mA
Status Polling Period                : 1
Interrupt Check Status Polling Delay : 2
--------------- Primary Channel ---------------- Secondary Channel -------------
                enabled                          enabled
66 Clocking     enabled                          disabled
           Mode PCI                         Mode PCI
                FIFO Empty                       FIFO Empty
--------------- drive0 --------- drive1 -------- drive0---------- drive1 ------
DMA enabled:    yes              no              no             no
DMA Mode:       UDMA 4           NOTSET          NOTSET         NOTSET
PIO Mode:       PIO 4            NOTSET           NOTSET        NOTSET
Oh, and by the way, ACPI support has never powered off this
machine.  Ever.  But I use apm and I'm happy. 
-Nick
-- ********************************************************** Nicholas Petreley Caldera Systems - LinuxWorld/InfoWorld nicholas@petreley.com - http://www.petreley.com - Eph 6:12 ********************************************************** . - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/