On Sun, Jan 09 2000, Khimenko Victor wrote:
> My CD-ROM (SONY CDU4011) will not corrupt anything when used with DMA enabled.
> It'll just froze the whole system. As it does this in both all versions of
> Linux I've tried and in Windows98 I suspect hardware problem ...
> Since I am used few different hard disks with DMA for more the year here I
> think it's CD-ROM problem and not MB problem.
I have a similar Sony that works just fine with DMA here.
> P.S. BTW is it possible to turn off DMA usage when there are no CD in drive ?
> hdparm -d 0 giving 'No medium found' and when I forget to disable DMA before
> first try to mount CD I'm getting total system freeze :-(( Really annoying ...
hdparm should open O_NONBLOCK for CD-ROM, that is why it fails. Andre
carried a hdparm once and it had my patch for that included.
-- * Jens Axboe <axboe@image.dk> * Linux CD-ROM Maintainer * http://www.kernel.dk- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Sat Jan 15 2000 - 21:00:15 EST