не могу записать диск (часть2)

Из первой части было выяснено, что в параметре dev надо указывать /dev/cdrom.
Так вот:
$cdrecord dev=/dev/cdrom -blank all

Cdrecord-Clone 2.01a27-dvd (i686-pc-linux-gnu) Copyright (C) 1995-2004 JЖrg Schilling
Note: This version is an unofficial (modified) version with DVD support
Note: and therefore may have bugs that are not present in the original.
Note: Please send bug reports or support requests to <warly@mandrakesoft.com>.
Note: The author of cdrecord should not be bothered with problems in this version.
scsidev: '/dev/cdrom'
devname: '/dev/cdrom'
scsibus: -2 target: -2 lun: -2
Warning: Open by 'devname' is unintentional and not supported.
Linux sg driver version: 3.5.27
Using libscg version 'schily-0.8'.
cdrecord: Warning: using inofficial libscg transport code version (warly-scsi-linux-sg.c-1.80-mdk '@(#)scsi-linux-sg.c 1.80 04/03/08 Copyright 1997 J. Schilling').
Device type : Removable CD-ROM
Version : 0
Response Format: 1
Vendor_info : 'ASUS '
Identifikation : 'CRW-4824A '
Revision : '1.35'
Device seems to be: Generic mmc CD-RW.
Using generic SCSI-3/mmc CD-R/CD-RW driver (mmc_cdr).
Driver flags : MMC-3 SWABAUDIO BURNFREE
Supported modes: TAO PACKET SAO SAO/R96P SAO/R96R RAW/R16 RAW/R96P RAW/R96R
Starting to write CD/DVD at speed 10.0 in real BLANK mode for single session.
Last chance to quit, starting real write 0 seconds. Operation starts.
cdrecord: Success. blank unit: scsi sendcmd: no error
CDB: A1 00 00 00 00 00 00 00 00 00 00 00
status: 0x2 (CHECK CONDITION)
Sense Bytes: F0 00 03 00 00 00 00 0A 00 00 00 00 51 00 00 00
Sense Key: 0x3 Medium Error, Segment 0
Sense Code: 0x51 Qual 0x00 (erase failure) Fru 0x0
Sense flags: Blk 0 (valid)
cmd finished after 25.278s timeout 9600s
cdrecord: Cannot blank disk, aborting.

при попытке записи на абсолютно новую болванку 16-24x на скорости 8х образа выдает вт это:
cdrecord: Trying to use ultra high speed medium on improper writer.

Что делать?