C
Cheffy
recently purchased a diamondmax ultra 16 250 gb hd, and installed it
as a second HD as a master on the secondary ide channel (it's not the
boot drive) using the cable provided (80 wire) and the maxblast
software. The drive works, but responds only in multi-word dma 2 mode.
My boot drive, a 20 gb maxtor fireball, functions fine in UDMA 5. I
have a 1.5 GHz P4, SiS motherboard, running win XP pro. My AMI bios
sets the 250 gb hd to UDMA 6, but windows only allows multi-word dma 2,
despite the other HD set as UDMA 5. It would appear that a
miscommunication between the bios and XP is occurring. Contacting
maxtor gave no useful info.
I've tried uninstalling the secondary channel and letting windows
reinstall it, updating my IDE drivers, altering registry values to
force it into UDMA and under device manager dma if available is
selected. NO dice. I have AMI bios that autoselects for UDMA so it
cannot be manually adjusted, but udma is recognised.
The 20 gb drive under the primary ide channel as a master, and the 250
gb drive as the secondary master. Changing the 250 gb drive to the
primary slave still keeps the multi-word dma 2 mode. Changing cables
makes no difference.
I tested the HD using the powerblast software, no problems, used other
freeware, no problems noted. But the transfer rate remains
consistently low at 16.4 mb/s, no ups, no downs. It's obvious that the
restriction in performance is due to it's inability to use UDMA instead
of multi-word dma 2.
I don't want to do a clean install of XP because of the time involved
with updates and making configuration changes. I've read in forums the
problem may be linked to the ESCD and that clearing it may solve the
problem, but I'm not certain about doing this. Would installing an
additional IDE controller card and forcing a new channel help?
I am out of ideas. PLease help!
Jason
as a second HD as a master on the secondary ide channel (it's not the
boot drive) using the cable provided (80 wire) and the maxblast
software. The drive works, but responds only in multi-word dma 2 mode.
My boot drive, a 20 gb maxtor fireball, functions fine in UDMA 5. I
have a 1.5 GHz P4, SiS motherboard, running win XP pro. My AMI bios
sets the 250 gb hd to UDMA 6, but windows only allows multi-word dma 2,
despite the other HD set as UDMA 5. It would appear that a
miscommunication between the bios and XP is occurring. Contacting
maxtor gave no useful info.
I've tried uninstalling the secondary channel and letting windows
reinstall it, updating my IDE drivers, altering registry values to
force it into UDMA and under device manager dma if available is
selected. NO dice. I have AMI bios that autoselects for UDMA so it
cannot be manually adjusted, but udma is recognised.
The 20 gb drive under the primary ide channel as a master, and the 250
gb drive as the secondary master. Changing the 250 gb drive to the
primary slave still keeps the multi-word dma 2 mode. Changing cables
makes no difference.
I tested the HD using the powerblast software, no problems, used other
freeware, no problems noted. But the transfer rate remains
consistently low at 16.4 mb/s, no ups, no downs. It's obvious that the
restriction in performance is due to it's inability to use UDMA instead
of multi-word dma 2.
I don't want to do a clean install of XP because of the time involved
with updates and making configuration changes. I've read in forums the
problem may be linked to the ESCD and that clearing it may solve the
problem, but I'm not certain about doing this. Would installing an
additional IDE controller card and forcing a new channel help?
I am out of ideas. PLease help!
Jason