setting udma on cdrom

Chadley Wilson chadley at
Tue Mar 9 20:02:34 UTC 2004

Hi Ppl,
Is it possible to set udma3 on a cdrom?
I get the following error.

[root at chadlin mnt]# hdparm -X udma3 /dev/cdrom
 setting xfermode to 67 (UltraDMA mode3)
 HDIO_DRIVE_CMD(setxfermode) failed: Input/output error
[root at chadlin mnt]#

The reason I want to increase the dma is for cd ripping speed. Currently
take about half an hour to rip one CD with 18 tracks. This is nonsense,
My windows box does the same job in 6 mins.

Both my boxes are P4s lot of ram and fast drives.


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