UDMA ICRC error
ea1abz at wanadoo.es
Wed Feb 16 12:45:01 GMT 2005
Hello FreeBSD friends.
I have read that others had this problem before. I just write this
report for you to know.
I received yesterday two old computers retired from a school and finally
I was able to build a "decent" machine mixing the best parts of each
one. The machine is an AMD K6 400 MHz with 64 MB RAM, AGP i740 video.
Hard disk is Seagate ST34321A/3.05 master on ide0 bus. On ide1 bus there
is a CD-R as master, and a CD-RW as slave. Disk controller is VIA
When I installed FreeBSD 5.3 R, I get some errors like this, but I could
end the install:
ad0: WARNING -READ_DMA UDMA ICRC error (retrying request) LBA=5313599
ad0: FAILURE -READ_DMA status=51<READY,DSC,ERROR> error=84 >ICRC,ABORTED>
spec_getpages:(ad0s1a) I/O read failure: (error=5) ................
I have solved the problem disabling DMA:
(I previously tried disabling ACPI with no success, and playing with
BIOS LBA, LARGE, NORMAL settings at the BIOS with no success).
Now ad0: works in PIO4 mode and everything is fine, previously , it was
UDMA33. Now there are no errors.
Should I investigate it further, or this is the only possible solution?
Should I expect a great performance decreasing in I/O disk access?
Thanks in advance.
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