Track 01: 34 of 1726 MB written (fifo 100%) [buf 99%] 3.6x.Errno: 5 (Input/output error), write_g1 scsi sendcmd: cmd timeout after 1.897 (40) s CDB: 2A 00 00 00 44 A9 00 00 1F 00 resid: 6144 cmd finished after 1.897s timeout 40s write track da

These errors believe it or not are simply because of not being the root user or running with sudo! However if you didn't know to try as root you'd think there was a problem with your burner or disc  Essentially it looks like without root you cannot send the required scsi commands to continue writing.  I think cdrecord should have built-in tests or safeguards to see if it has the permissions to run the required commands.

I guess for more advanced users the idea is similar that you cannot do a dd from a device without being root usually.

cdrecord -v linuxmint-18.1-cinnamon-64bit.iso
wodim: No write mode specified.
wodim: Assuming -tao mode.
wodim: Future versions of wodim may have different drive dependent defaults.
TOC Type: 1 = CD-ROM
wodim: Operation not permitted. Warning: Cannot raise RLIMIT_MEMLOCK limits.
Device was not specified. Trying to find an appropriate drive...
Looking for a DVD-R drive to store 1726.31 MiB...
Detected DVD-R drive: /dev/sr0
Using /dev/cdrom of unknown capabilities
scsidev: '/dev/cdrom'
devname: '/dev/cdrom'
scsibus: -2 target: -2 lun: -2
Linux sg driver version: 3.5.27
Wodim version: 1.1.11
Driveropts: 'burnfree'
SCSI buffer size: 64512
Device type    : Removable CD-ROM
Version        : 0
Response Format: 2
Capabilities   :
Vendor_info    : 'HL-DT-ST'
Identification : 'BD-RE WP50NB40  '
Revision       : '1.00'
Device seems to be: Generic mmc2 DVD-R/DVD-RW.
Current: 0x0011 (DVD-R sequential recording)
Profile: 0x0043 (BD-RE)
Profile: 0x0042 (BD-R random recording)
Profile: 0x0041 (BD-R sequential recording)
Profile: 0x0040 (BD-ROM)
Profile: 0x002B (DVD+R/DL)
Profile: 0x001B (DVD+R)
Profile: 0x001A (DVD+RW)
Profile: 0x0016 (DVD-R/DL layer jump recording)
Profile: 0x0015 (DVD-R/DL sequential recording)
Profile: 0x0014 (DVD-RW sequential recording)
Profile: 0x0013 (DVD-RW restricted overwrite)
Profile: 0x0012 (DVD-RAM)
Profile: 0x0011 (DVD-R sequential recording) (current)
Profile: 0x0010 (DVD-ROM)
Profile: 0x000A (CD-RW)
Profile: 0x0009 (CD-R)
Profile: 0x0008 (CD-ROM)
Profile: 0x0002 (Removable disk)
Using generic SCSI-3/mmc DVD-R(W) driver (mmc_mdvd).
Supported modes: PACKET SAO
Drive buf size : 2293760 = 2240 KB
Beginning DMA speed test. Set CDR_NODMATEST environment variable if device
communication breaks or freezes immediately after that.
FIFO size      : 12582912 = 12288 KB
Track 01: data  1726 MB       
Total size:     1982 MB (196:24.96) = 883872 sectors
Lout start:     1982 MB (196:26/72) = 883872 sectors
Current Secsize: 2048
HINT: use dvd+rw-mediainfo from dvd+rw-tools for information extraction.
Blocks total: 2298496 Blocks current: 2298496 Blocks remaining: 1414624
Speed set to 11080 KB/s
Starting to write CD/DVD at speed   8.0 in real unknown mode for single session.
Last chance to quit, starting real write in    0 seconds. Operation starts.
Waiting for reader process to fill input buffer ... input buffer ready.
Performing OPC...
Starting new track at sector: 0
Track 01:   34 of 1726 MB written (fifo 100%) [buf  99%]   3.6x.Errno: 5 (Input/output error), write_g1 scsi sendcmd: cmd timeout after 1.897 (40) s
CDB:  2A 00 00 00 44 A9 00 00 1F 00
resid: 6144
cmd finished after 1.897s timeout 40s

write track data: error after 35997696 bytes
wodim: A write error occured.
wodim: Please properly read the error message above.
Errno: 12 (Cannot allocate memory), test unit ready scsi sendcmd: no error
CDB:  00 00 00 00 00 00
status: 0x0 (GOOD STATUS)
cmd finished after 0.000s timeout 40s
Writing  time:   54.507s
Average write speed  28.3x.
Min drive buffer fill was 99%
Errno: 12 (Cannot allocate memory), flush cache scsi sendcmd: no error
CDB:  35 00 00 00 00 00 00 00 00 00
status: 0x0 (GOOD STATUS)
cmd finished after 0.000s timeout 120s
Trouble flushing the cache
wodim: Cannot fixate disk.
Fixating time:    0.000s
Errno: 12 (Cannot allocate memory), prevent/allow medium removal scsi sendcmd: no error
CDB:  1E 00 00 00 00 00
status: 0x0 (GOOD STATUS)
cmd finished after 0.000s timeout 40s
wodim: fifo had 758 puts and 568 gets.
wodim: fifo was 0 times empty and 336 times full, min fill was 97%.


Simply run cdrecord again as root or with sudo:

cdrecord -v linuxmint-18.1-cinnamon-64bit.iso


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