Comment 2 for bug 115244

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George Mason (george-porthall) wrote :

I haven't tried Gutsy yet. However I think the problem is down to not being able to enable DMA on the drive. When I run hdparm I get the following output:

gmason@gmason-laptop:~$ sudo hdparm -d1 /dev/scd0

/dev/scd0:
 setting using_dma to 1 (on)
 HDIO_SET_DMA failed: Inappropriate ioctl for device
gmason@gmason-laptop:~$ sudo hdparm /dev/scd0

/dev/scd0:
 IO_support = 0 (default 16-bit)
 readonly = 0 (off)
 readahead = 256 (on)
 HDIO_GETGEO failed: Inappropriate ioctl for device

I think this is the cause of the problems.