On 22 Oct 2003, Teletchéa Stéphane wrote: > Le mer 22/10/2003 à 14:55, [EMAIL PROTECTED] a écrit : > > On 22 Oct 2003, Teletchéa Stéphane wrote: > > > > > Le mer 22/10/2003 à 13:59, Guillaume Cottenceau a écrit : > > > > Hi, > > > > > > > > > > Be carefull ! > > > You misread my post : i'm saying UNTIL 9.1, i need to desactivate DMA > > > for my LG cdrom/burner model HL-DT-ST CD-RW GCE-8240B. > > > > > > I didn't test it already with 9.2 ... > > Yes, but even until 9.1, you didn't fry the drive did you? > > No, you're correct. > > > DMA is not supported on the CRD-8400B, it is in the kernel nodma blacklist > > (drive_list_entry drive_blacklist). IIRC during the first 2.4.x kernels it > > was not in the list, and people got dma errors, but no drive damage at > > all. I think you can only turn on dma on this drive with hdparm -d1 -X34 > > /dev/hd? > > I did a fresh install for 8.1 and 9.0 (disk failure for the second > -backups are my friends-) and DMA was activated on my drive, causing it > to dma_errors 'DriveSeek Error ... blabla'. > > I had to manually disable it by adding a line in /etc/sysconfig/hardhdc > telling explicitly DMA to be turned off. > > Are you sure it is blacklisted ?
CRD-8400B is blacklisted, your drive is not. But it works in 9.1/9.2 with DMA? If not I can make a patch in next kernel-mm and you can try if it works for you. I am very doubtful if the "fried" drives have anything to do with dma. d.
