Thanks for your reply.
I tried as your suggest.
dd if=/dev/zero of=/dev/hda bs=1024 count=10000 ~ 100000 Segmentation fault's are occured in random by count.
and then, turn off the UDMA feature by hdparm option. But, I can see same symptom.
In this time, I tried to attach SCSI & IEEE1394 SBP-2 devices. case1. Adaptec 2930 SCSI adapter + 8GB Seagate SCSI HDD case2. IEEE1394 Interface card + external IEEE1394 HDD both cases show the same problem.
Now, I think it's not a DMA problem. I'm in the maze. hmmmm......
Is there any clear hint?
----- Original Message ----- From: "Ronald G. Minnich" rminnich@lanl.gov To: "Munjun Kang" malas@pinetron.com Cc: linuxbios@clustermatic.org Sent: Thursday, November 28, 2002 12:55 AM Subject: Re: file system error
can you try a few things:
- do a raw dd command to the disk from /dev/zero and see if that works,
e.g. dd if=/dev/zero of=/dev/hda
- turn off UDMA, in fact turn off ALL dma at first
- try to make it run totally PIO
This is weird, but it does seem like some kind of DMA problem.
Also, boot under the normal bios and do an lspci -xxx and then do an lspci -xxx under linuxbios and see if you see any IDE setup differences.
ron