On Donnerstag 18 Februar 2010, James wrote:
> Hello,
>
>
> hdparm -i /dev/hda
>
> Model=IBM-DJNA-371350, FwRev=J76OA30K, SerialNo=GM0GMGB6505
> Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
> RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=34
> BuffType=DualPortCache, BuffSize=1966kB, MaxMultSect=16, MultSect=16
> CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=26520480
> IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120}
> PIO modes: pio0 pio1 pio2 pio3 pio4
> DMA modes: mdma0 mdma1 mdma2
> UDMA modes: udma0 udma1 *udma2 udma3 udma4
> AdvancedPM=no WriteCache=enabled
> Drive conforms to: ATA/ATAPI-4 T13 1153D revision 17: ATA/ATAPI-1,2,3,4
>
> * signifies the current active mode
>
>
> Should I put the drive into udma4 mode?
>
> If so, wouldn't I use:
>
> hdparm -d 1 -X 68 /dev/hda
>
>
> ???
>
>
> James
no
usually the kernel chooses the right mode. If this one is lower than expected,
you shouldn't mess with it. Either grep for your drive or controller in the
kernel sources - it might be blacklisted - or get a different cable.
Never set udma modes.
02-18-2010, 01:57 PM
Jesús Guerrero
hdparm -d 1 -X 68 ?
On Thu, 18 Feb 2010 14:33:38 +0000 (UTC)
James <wireless@tampabay.rr.com> wrote:
...
> UDMA modes: udma0 udma1 *udma2 udma3 udma4
...
> Should I put the drive into udma4 mode?
>
> If so, wouldn't I use:
>
> hdparm -d 1 -X 68 /dev/hda
Sincerely, I haven't seen the need of manually tuning this with hdparm
for ages. The kernel is pretty good these days at that, and the drive
is probably already working at its max speed.
Looking at the specs and age of that model, there's nothing else you
can get from this drive.
--
Jesús Guerrero <i92guboj@terra.es>
02-18-2010, 02:17 PM
James
hdparm -d 1 -X 68 ?
Jesús Guerrero <i92guboj <at> terra.es> writes:
> Looking at the specs and age of that model, there's nothing else you
> can get from this drive.
OK thanks to all that answered.
I' just going to leave it alone.
James
02-18-2010, 08:57 PM
Mick
hdparm -d 1 -X 68 ?
On Thursday 18 February 2010 14:33:38 James wrote:
> Hello,
>
>
> hdparm -i /dev/hda
>
> Model=IBM-DJNA-371350, FwRev=J76OA30K, SerialNo=GM0GMGB6505
> Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
> RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=34
> BuffType=DualPortCache, BuffSize=1966kB, MaxMultSect=16, MultSect=16
> CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=26520480
> IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120}
> PIO modes: pio0 pio1 pio2 pio3 pio4
> DMA modes: mdma0 mdma1 mdma2
> UDMA modes: udma0 udma1 *udma2 udma3 udma4
> AdvancedPM=no WriteCache=enabled
> Drive conforms to: ATA/ATAPI-4 T13 1153D revision 17: ATA/ATAPI-1,2,3,4
>
> * signifies the current active mode
>
>
> Should I put the drive into udma4 mode?
>
> If so, wouldn't I use:
>
> hdparm -d 1 -X 68 /dev/hda
According to the hitachi manual (who made this drive for IBM) the DJNA-3XXXXX
series has a Ultra ATA Mode 2 (33.3 MB per second) capability. So the kernel
is not lying in this case and you can trust hdparm in what it shows. I
suggest you leave alone.
--
Regards,
Mick
02-18-2010, 09:53 PM
walt
hdparm -d 1 -X 68 ?
On 02/18/2010 01:57 PM, Mick wrote:
On Thursday 18 February 2010 14:33:38 James wrote:
Should I put the drive into udma4 mode?
If so, wouldn't I use:
hdparm -d 1 -X 68 /dev/hda
According to the hitachi manual (who made this drive for IBM) the DJNA-3XXXXX
series has a Ultra ATA Mode 2 (33.3 MB per second) capability. So the kernel
is not lying in this case and you can trust hdparm in what it shows. I
suggest you leave alone.
Shouldn't the drive just refuse any command that it can't do?
02-18-2010, 10:12 PM
Volker Armin Hemmann
hdparm -d 1 -X 68 ?
On Donnerstag 18 Februar 2010, walt wrote:
> On 02/18/2010 01:57 PM, Mick wrote:
> > On Thursday 18 February 2010 14:33:38 James wrote:
> >> Should I put the drive into udma4 mode?
> >>
> >> If so, wouldn't I use:
> >>
> >> hdparm -d 1 -X 68 /dev/hda
> >
> > According to the hitachi manual (who made this drive for IBM) the
> > DJNA-3XXXXX series has a Ultra ATA Mode 2 (33.3 MB per second)
> > capability. So the kernel is not lying in this case and you can trust
> > hdparm in what it shows. I suggest you leave alone.
>
> Shouldn't the drive just refuse any command that it can't do?
udma4 has not additional commands. It is just faster. And no, some drivers
don't. With desastrous results.
On Thursday 18 February 2010 14:33:38 James wrote:
Should I put the drive into udma4 mode?
If so, wouldn't I use:
hdparm -d 1 -X 68 /dev/hda
According to the hitachi manual (who made this drive for IBM) the
DJNA-3XXXXX
series has a Ultra ATA Mode 2 (33.3 MB per second) capability. So
the kernel
is not lying in this case and you can trust hdparm in what it shows. I
suggest you leave alone.
Shouldn't the drive just refuse any command that it can't do?
I would think it would but since the drive can't run at that setting,
why do it? The drive can't most likely from hardware so why take the
chance of messing something up?
hdparm -d 1 -X 68 ?
