LH 20A1H - i cant erase a rw disk

hi

i have 3 rw disks a sony 1-4x a verbatim x4 (RW 2) & a philips 1-4x
i cant manage to erase them
i have tryed the official bios and the patched down to LL06
even with the shiped bios the erase were impossible
i have nero 7.10.10
the dvdr inform me that the disks arent RW
but the DVD Identifier gives me the first time
[17:59:55] DVD Identifier V5.0.1
[17:59:55] Initializing Drive Interface [Auto-Select ASPI/SPTI]
[17:59:55] SPTI Drive Interface Successfully Initialized
[17:59:55] 1 Supported Drive Found (Out Of 3 Available Drives)
[17:59:55] Manufacturer Database [08-OCT-06@727$93] Loaded From File : (@727$93) Entries Found
[17:59:55] Internet Version Check Postponed Since Last Check Happened Less Than 1 Hour Ago
[17:59:58] ERROR : Unsupported Medium Detected
[17:59:58] INFO : Disc Identification Requires DVD, HD DVD or Blu-ray

the 2nd time when i push the eject and reload again the disk

[18:01:15] DVD-R/-RW Medium Detected. Starting Identification…
[18:01:15] ** Initiating LPP Retrieval
[18:01:15] LPP Read Completed Without Errors
[18:01:15] Disc Identification Completed Successfully

** INFO : Drive = LITE-ON DVDRW LH-20A1H - [FW LL06] - [ATAPI]
** INFO : Write Capabilities = DVD+R DVD+R-DL DVD+RW
** INFO : Write Capabilities = DVD-R DVD-R-DL DVD-RW DVD-RAM
** INFO : Disc = [DVD-RW:MCC 01RW4X ]
** INFO : Reference Speed : 1x DVD = 1385 kBps
** INFO : An Writeable Disc Is Recommended For Accurate Results
** INFO : Write Speeds (Supported By This Drive On This Disc) Listed Below

** INFO : GET PERFORMANCE Write Speed Descriptor(s)
Descriptor #1 = 5540 kBps ( 4.00x) - [CLV/Non-Pure CAV]

** INFO : MODE SENSE Write Speed Descriptor(s) [Legacy Command]
** WARNING : MODE SENSE Is Obsolete And Not Always Properly Supported
Descriptor #1 = 5540 kBps ( 4.00x) - [CLV/Non-Pure CAV]

** INFO : Hex Dump Of ‘Media Code’-Block Listed Below
** INFO : 4-Byte Header Preceding ‘Media Code’-Block Present
** INFO : Format 0Eh - Pre-Recorded Information In Lead-In
0000 : 00 6c 00 00 01 02 d6 fd 9e d8 31 00 02 00 00 00 .l…1…
0010 : 00 00 00 00 03 4d 43 43 20 30 31 00 04 52 57 34 …MCC 01…RW4
0020 : 58 20 20 00 05 00 00 00 00 00 00 00 06 15 0c 05 X …
0030 : 50 10 10 00 07 15 0c 05 88 50 10 00 08 1a 0a 08 P…P…
0040 : 80 01 00 00 09 1a 0a 08 88 80 01 00 0a 00 00 00 …
0050 : 00 00 00 00 0b 16 0c 13 0b 04 10 00 0c 10 10 03 …
0060 : 16 1a 03 00 0d 00 00 00 00 00 00 00 00 00 …

ps my 2nd dvd nec erases all the dvdrw

any help please :bow:

thanks

Full format them with Imgburn.

Upgrade firmware to LL0B. I had the same problem with all the other firmwares.

Are you using the FastBurn firmware? If so, then change to the stock firmware.

i use the LL0B stock —> i got the same errors
only with the ImgBurn i manage to erase the RW disks

thanks that progy makes the deal :clap:
but why i cant erase the RW disks with nero or alchohol ?? :a
:slight_smile:

Both are nominated for the most updated programs and for most bugged programs too. :doh: