SCSI error GRR!!

Salut à tous !
Bon ! Hier c'est l'alim qui claque .... Aujourd'hui le graveur :(

cdrecord -v speed=4 dev=0,0 /home/her/debian/sarge-i386-netinst.iso
....
cdrecord: Input/output error. test unit ready: scsi sendcmd: no error
CDB: 00 00 00 00 00 00
status: 0x2 (CHECK CONDITION)
Sense Bytes: 70 00 02 00 00 00 00 0A 00 00 00 00 3A 02 00 00
Sense Key: 0x2 Not Ready, Segment 0
Sense Code: 0x3A Qual 0x02 (medium not present - tray open) Fru 0x0
Sense flags: Blk 0 (not valid)
cmd finished after 0.000s timeout 40s
cdrecord: No disk / Wrong disk!
.....

Dans /var/log/mesages :
SCSI error: host 0 id 0 lun 0 return code = 28000000

Je change de CD vierge ... relance ... et pareil !
J'éssaye de monter un CD ... rien !

Je crains qu'il ne soit naze

Snif RV2D