cdrecord hangs hen accessing the drive

[CeDeROM]

Yes, this is exactly when accessing the drive:

% cdrecord lubuntu-13.10-desktop-i386.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 3.00 (amd64-unknown-freebsd10.0) Copyright
(C) 1995-2010 J�rg Schilling
cdrecord: Operation not permitted. Warning: Cannot raise RLIMIT_MEMLOCK limits.
cdrecord: Cannot allocate memory. WARNING: Cannot do mlockall(2).
cdrecord: WARNING: This causes a high risk for buffer underruns.
cdrecord: Operation not permitted. WARNING: Cannot set RR-scheduler.
cdrecord: Permission denied. WARNING: Cannot set priority using setpriority().
cdrecord: WARNING: This causes a high risk for buffer underruns.
Using libscg version 'schily-0.9'.
No target specified, trying to find one...
cdrecord: Too many CD/DVD/BD-Recorder targets found.
scsibus0:
0,0,0  0) 'ASUS    ' 'DRW-22B2L       ' '1.02' Removable CD-ROM
0,1,0  1) 'LG      ' 'CD-RW CED-8120B ' '1.02' Removable CD-ROM
0,2,0  2) *
0,3,0  3) *
0,4,0  4) *
0,5,0  5) *
0,6,0  6) *
0,7,0  7) *
scsibus4:
4,0,0 400) '' '' '' NON CCS Disk
4,1,0 401) *
4,2,0 402) *
4,3,0 403) *
4,4,0 404) *
4,5,0 405) *
4,6,0 406) *
4,7,0 407) *
scsibus6:
6,0,0 600) '' '' '' NON CCS Disk
^C
^C^C^C^C
^C^C^C^C^C


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CeDeROM, SQ7MHZ, http://www.tomek.cedro.info