Thread: CF, as wd0, 4.3 dmesg "DMA error"
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Old 9th May 2008
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s2scott s2scott is offline
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Originally Posted by Zmyrgel View Post
I will try this too. I tried to install OpenBSD 4.3 on my soekris CF and got similar errors when creating partitions.

Update: Didn't help in my case. I got 4-sector SanDisk CF. Dmesg that I get to glimpse seems OK but when installer tries to create the partitions it still gives me errors like "wd0c: device timeout reading fsbn 0 (wd0 bn 0; cn 0 tn 0 sn 0), retrying"
  1. In machine BIOS, if configurable, try turning IDE bus mastering to OFF;
  2. In machine BIOS, for the IDE drive that the CF enumerates to, try changing from type "AUTO" to a different but logical choice -- some BIOSs have a type "REMOVABLE IDE".
  3. or, combination of the above.
SanDisk I know is internally flagged as removable, not fixed, and maybe openBSD and your BIOS settings are giving mixed messages.
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Last edited by s2scott; 10th May 2008 at 12:17 AM. Reason: Added, bullet #3 for clarity
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