I have happily used Verbatim DVD+R DL discs with Imgburner / Nero / Alcohol with my LiteOn DVDR SOHW 1673S burner with no problems until my latest purchase of the DVD-R DL discs in Australia. All 3 above utilities report the new discs as 'not empty' and will not record. Alcohol 120% reports a 2k file at the beginning of the disc hence the error message.
Looking at media info:
The old successfull discs were:
ID MKM 001 Mitsubishi Kgaku Media
The new unsuccessful discs were:
ID MKM 01RD 30 Disk application code:2 / Disc physical code 145
It looks like the DVD-R DL discs have been crippled to accept data only but not image writing software - presumably as an anti-backup measure. Or is this some limitation inherent in -R media ?
Anyone care to comment ?