Displaying 1 result from an estimated 1 matches for "read_big".
2003 Apr 28
1
ATA driver not as good in 4.8 as 4.5?
...o set
the burner to DMA. Everything then worked fine. As far as I know it
was using UDMA33. That's what the BIOS said it was using anyway.
With FreeBSD 4.8 I use "hw.ata.atapi_dma=1" at boot. This then tells
me it is using UDMA33. Unfortunately, I then often get this:
acd0: READ_BIG - HARDWARE ERROR asc=0x08 ascq=0x03 error=0x00
I think this means a DMA error. (PS why not say what it is?)
If I use atacontrol to downgrade to WDMA2, it works flawlessly (though
somewhat slower than it does in UDMA33 mode).
So, was 4.5 setting my hardware to WDMA2 when I thought it was doing U...