> $ growisofs -Z /dev/scd0 -speed=8 -R -J treename > it takes the whole 44 minutes
First question: is DMA enabled on the burner? (hdparm /dev/hdX)
Apparently, it is not: # hdparm /dev/hdc
/dev/hdc: HDIO_GET_MULTCOUNT failed: Invalid argument IO_support = 0 (default 16-bit) unmaskirq = 0 (off) using_dma = 0 (off) keepsettings = 0 (off) readonly = 0 (off) readahead = 256 (on) HDIO_GETGEO failed: Invalid argument
Trying to set it does not succeed: # hdparm -d1 /dev/hdc
/dev/hdc: setting using_dma to 1 (on) HDIO_SET_DMA failed: Operation not permitted using_dma = 0 (off)
Once again with -X flag: # hdparm -d1 -X /dev/hdc
/dev/hdc: setting using_dma to 1 (on) HDIO_SET_DMA failed: Operation not permitted setting xfermode to 0 (default PIO mode) using_dma = 0 (off)
The speed= parameter takes as argument the Nth entry in the table of available speeds (the docs may be unclear on this). Is the 8th entry indded 8x, or perhaps 1x?
When the burning starts, I get the message saying that the actual write speed is 8.2x. Does this mean anything?
Thanks for help, Alex
-- Alexander Roitman http://ebner.neuroscience.umn.edu/people/alex.html Dept. of Neuroscience, Lions Research Building 2001 6th Street SE, Minneapolis, MN 55455 Tel (612) 625-7566 FAX (612) 626-9201
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