On Tue, 20 Jun 2000, Serguei Patchkovskii wrote:
| Write speed is media-dependent; the drive won't try to write at a speed
| higher than that is supported by the media. This tends to be more of a
| problem with CD-RW media - only very few brands support writing at speed
| higher than 2x.
|
| To check whether this is really the case, do -prcap on your drive with
| *no* media inserted, and see that it says (you may have to power it down
| first). Then, put in the media, and do cdrecord -atip - and see that it
| says about the maximum write speed for the media itself ...
Serguei is right !
I made my test with a HP-RW media (C4431A) so max speed was X2. This is
'cdrecord dev=1,3,0 -atip' output:
---8<--------------------------------------
ATIP info from disk:
Indicated writing power: 5
Reference speed: 2
Is not unrestricted
Is erasable
ATIP start of lead in: -11625 (97:27/00)
ATIP start of lead out: 333750 (74:12/00)
speed low: 2 speed high: 2
power mult factor: 5 6
recommended erase/write power: 3
Disk type: phase change
---8<--------------------------------------
This is 'cdrecord dev=1,3,0 -prcap' WITHOUT media inside:
---8<--------------------------------------
Maximum read speed in kB/s: 2822
Current read speed in kB/s: 4234
Maximum write speed in kB/s: 1411 <- OK !!!
Current write speed in kB/s: 1411
Buffer size in KB: 4096
---8<--------------------------------------
TNX Serguei !
_Bye_
Enrico 8-)
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ENRICO ARDIZZONI - mailto:enrico_at_unife.it -
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Received on Wed Jun 21 2000 - 07:00:03 NZST