最近使っている CF-S9 には DVD/R Drive が付いているが、一度も使ったことがなかった。
FreeBSD の 10.3 の iso.xz
FreeBSD-10.3-RELEASE-amd64-disc1.iso.xz
を ftp.allbsd.org からもらって来て、xz はなかったので archivers/xz を入れて
using cdrecord (2015/03/02) を見て、そのまま入力したら、うまく書いてくれた。たまたま HP ML115 があったので、 入れて起動したら、動いた。
CF-N9@makoto 11:44:13/160724(~/Downloads-japanese)%
sudo cdrecord -v dev=31,0,0 speed=16 driveropts=burnfree -data FreeBSD-10.3-RELEASE-amd64-disc1.iso

cdrecord: No write mode specified.
cdrecord: Assuming -sao mode.
cdrecord: If your drive does not accept -sao, try -tao.
cdrecord: Future versions of cdrecord may have different drive dependent defaults.
Cdrecord-ProDVD-ProBD-Clone 3.01 (amd64-unknown-netbsd7.0) Copyright (C) 1995-2015 Joerg Schilling
TOC Type: 1 = CD-ROM
scsidev: '31,0,0'
scsibus: 31 target: 0 lun: 0
Using libscg version 'schily-0.9'.
Driveropts: 'burnfree'
SCSI buffer size: 61440
atapi: 1
Device type    : Removable CD-ROM
Version        : 0
Response Format: 2
Capabilities   : 
Vendor_info    : 'MATSHITA'
Identifikation : 'DVD-RAM UJ869AS '
Revision       : '1.01'
Device seems to be: Generic mmc2 DVD-R/DVD-RW/DVD-RAM.
Current: CD-R
Profile: DVD-RAM 
Profile: DVD+R 
Profile: DVD+RW 
Profile: DVD-RW restricted overwrite 
Profile: DVD-RW sequential recording 
Profile: DVD-R sequential recording 
Profile: DVD-ROM 
Profile: CD-RW 
Profile: CD-R (current)
Profile: CD-ROM 
Profile: Removable Disk 
Using generic SCSI-3/mmc   CD-R/CD-RW driver (mmc_cdr).
Driver flags   : MMC-3 SWABAUDIO BURNFREE 
Supported modes: TAO PACKET SAO RAW/R16 RAW/R96P RAW/R96R
Drive buf size : 1310720 = 1280 KB
cdrecord: Warning: Cannot read drive buffer.
cdrecord: Warning: The DMA speed test has been skipped.
FIFO size      : 4194304 = 4096 KB
Track 01: data   696 MB        
Total size:      799 MB (79:11.60) = 356370 sectors
Lout start:      799 MB (79:13/45) = 356370 sectors
Current Secsize: 2048
ATIP info from disk:
  Indicated writing power: 4
Disk Is not unrestricted
Disk Is not erasable
  Disk sub type: Medium Type A, high Beta category (A+) (3)
  ATIP start of lead in:  -11849 (97:24/01)
  ATIP start of lead out: 359847 (79:59/72)
Disk type:    Long strategy type (Cyanine, AZO or similar)
Manuf. index: 25
Manufacturer: Taiyo Yuden Company Limited

    Capacity  Blklen/Sparesz.  Format-type  Type
     4104234             2048         0x00  No Media Present or Unknown Capacity
Blocks total: 359847 Blocks current: 359847 Blocks remaining: 3477
Starting to write CD/DVD/BD at speed 16 in real SAO mode for single session.
Last chance to quit, starting real write    0 seconds. Operation starts.
Waiting for reader process to fill input buffer ... input buffer ready.
BURN-Free is ON.
Performing OPC...
Sending CUE sheet...
cdrecord: WARNING: Drive returns wrong startsec (0) using -150
Writing pregap for track 1 at -150
Starting new track at sector: 0
Track 01:   49 of  696 MB written (fifo 100%) [buf 100%]  12.6x.


Track 01:  696 of  696 MB written (fifo 100%)  16.7x.0%]  16.8x.
Track 01: Total bytes read/written: 729845760/729845760 (356370 sectors).
Writing  time:  361.748s (00:06:01.748)
Average write speed  13.3x.
Min drive buffer fill was 87%
Fixating...
Fixating time:    8.164s (00:00:08.164)
BURN-Free was never needed.
cdrecord: fifo had 11879 puts and 11879 gets.
cdrecord: fifo was 0 times empty and 10259 times full, min fill was 92%.
CF-N9@makoto 11:52:08/160724(~/Downloads-japanese)% 

所要 8 分くらい。 有難いことです。