cd writer backup

[Fengmei Zhao]

The cd writer I have is 'YAMAHA'. I can use it to write files in any other directories not usr4 by speed 24X. The error message is as the following:
=======================
Please enter the volume id: r_1
Please enter path name: /usr4/BED10/r_1
Please enter the speed: 24
Cdrecord release 1.8a14 Copyright (C) 1995-1998 J??rg Schilling
TAMS changes Copyright (C) 1998-1999 A Neil.
TOC Type: 1 = CD-ROM
scsidev: '1,3,0'
scsibus: 1 target: 3 lun: 0
atapi: 0
Device type : Removable CD-ROM
Version : 2
Response Format: 2
Capabilities : SYNC
Vendor_info : 'YAMAHA '
Identification : 'CRW3200S '
Revision : '1.0b'
Device seems to be: Generic mmc CD-RW.
Using generic SCSI-3/mmc CD-R driver (mmc_cdr).
Driver flags : SWABAUDIO
Track 01: data unknown length
Total size: 0 MB (00:00.00) = 0 sectors
Lout start: 0 MB (00:02/00) = 0 sectors
Current Secsize: -1
ATIP info from disk:
Indicated writing power: 5
Is not unrestricted
Is not erasable
Disk sub type: 2
ATIP start of lead in: -11634 (97:26/66)
ATIP start of lead out: 359849 (79:59/74)
Disk type: Phthalocyanine or similar
Manuf. index: 3
Manufacturer: CMC Magnetics Corporation
cdrecord: Note: Track size unknown. Data may not fit on disk.
Starting to write CD/DVD at speed 24 in write mode for single
session.
Waiting for reader process to fill input-buffer ... input-buffer
ready.
Starting new track at sector: 0
13.81% done, estimate finish Thu Sep 26 21:45:38 2002
27.59% done, estimate finish Thu Sep 26 21:44:44 2002
41.40% done, estimate finish Thu Sep 26 21:44:26 2002
cdrecord: I/O error. write_g1: scsi sendcmd: retryable error
CDB: 2A 00 00 00 40 AA 00 00 1F 00
status: 0x2 (CHECK CONDITION)
Sense Bytes: 70 00 05 00 00 00 00 0A 00 00 00 00 21 00 00 00 00
00
Writing time: 40.472s
Fixating...
Fixating time: 17.695s
cdrecord: fifo had 567 puts and 535 gets.
cdrecord: fifo was 45 times empty and 2 times full, min fill
was 0%.

==========================
The confused thing is that I can use 'YAMAHA' to write sucessfully by speed 4X in 'usr4' directory, and I can also get the file to be written by speed 24X if I move it to other directory.

[I_M]

Hi

Your log said that "fifo was 45 times empty" This is the reason why you failed to burn CD-R with x24 speed.

Data transfer from HD to CD-R drive is not fast enough.
What you can do is,
* use separate scsi data path.
* use fs option in cdrecord command line. This option will add more buffer on your memory.
Memory is faster device than HD.
* use x24 support CD-R
Some older or cheaper media support only x2-x8 speed burn.

Good luck