IDE Keeps falling back to PIO

  • Thread starter Thread starter Mark Turnbull
  • Start date Start date
M

Mark Turnbull

My daughter has a Compaq Laptop its only a few months old (5 to be
precise) and twice now she has found that it suddenly runs very slowly.
On both occasions I have found the disk transfer rate is sitting about 1
MB/s rather than 20MB/s and on further investigation have found that the
Primary IDE channel device 0 has reverted to PIO rather than Ultra DMA
mode 5.

The only way it will reset itself to DMA is if I uninstall the primary
IDE Channel and let it re-detect it on start up.

Any suggestions as to why this might be happening?

TIA
 
Mark said:
My daughter has a Compaq Laptop its only a few months old (5 to be
precise) and twice now she has found that it suddenly runs very slowly.
On both occasions I have found the disk transfer rate is sitting about 1
MB/s rather than 20MB/s and on further investigation have found that the
Primary IDE channel device 0 has reverted to PIO rather than Ultra DMA
mode 5.

The only way it will reset itself to DMA is if I uninstall the primary
IDE Channel and let it re-detect it on start up.

Any suggestions as to why this might be happening?

TIA
Click to expand...

Check the specifications to make sure that the Compaq is supposed
to be running under DMA. If so, then verify that the proper IDE
cable (80-conductor) is being used and that the cable is inserted
properly and cleanly for DMA.
 
Ghostrider said:
Check the specifications to make sure that the Compaq is supposed
to be running under DMA. If so, then verify that the proper IDE
cable (80-conductor) is being used and that the cable is inserted
properly and cleanly for DMA.
Click to expand...


Above does not compute, Will Robinson - operative word "laptop".
 
If you have to send it back to HP, make sure you back up all important
information (and erase sensitive information) before you ship it. You
probably won't get the same hard drive back.
 
Back
Top