Daniel
05-07-2001, 10:11 AM
Hello.
I have Yamaha CRW6416S drive, SCSI, with the latest (1.0d) firmware upgrade (on Pentium 166, 32RAM, BTC IDE CDROM X12(non-functional, though), Win98).
The problem is that suddenly it couldn't read some disks (TDK's light-green metallic disks and Verbatim's blue). The CDs that couldn't be read were burned by that own CD-RW, and some time ago the same disks could be read and used without any problem.
Now, sometimes when i insert those CDs (even if autonotification is off), it hangs a PC (the CD-RW tries to read a disk for a very long time, then stops, and it is not even possible to eject a CD. Then, it is not enough to reboot if you want to reject CD - i have to power down), other times (most of the times, actually) i could browse CD's contents, but when i try to open a text file, or run a program, i get an empty file or a message that an application is not a valid Win32 program, respectively. When i right-click on most files on those disks and choose "Properties" from a pop-up menu, it crashes an Explorer (exception in module CRYPT32.DLL, and sometimes in KERLEL32.dll). When i try to copy a file, i get a message "Device doesn't recognize the command". What is interesting, is that some files are not empty, could be copied, and it's properties could be viewed without crashing anything.
Now, there is some distinction between TDK's and Verbatim's disks:
TDK's either freeze up the system or their contents could be browsed but not used. From the other side, Verbatim's never freezes anything, and sometimes they are fully functional, but other times when you insert Verbatim's CD it appears to be empty, and when you check disk's properties it shows that CD has 2GB of used space.
When i try to run CD-R Diagnostic on those disks, i get a warning: "Since the first track on that disk doesn't start at block 0, an implicit data track is being assumed to be present from block 0 to block 11249".
When i try to copy most of files with CD Diagnostic, i get an error: "Block passed end of recording on media. Sense = 21 00", and though the file is copied (it takes up space), it is still not a valid file.
All the disks (readable and unreadable) were burned using CeQuadrat's WinOnCD 3.60.420 .
Any attempt to read problematic CDs from Linux partition results in a total failure (even a directory tree couldn't be read. But at least it never hangs a PC).
Also, have some GPT CDs (those were burned with some other CD-RW), which also have light-green colored recording layer (but lighter), and they also were readable some time ago, but now they have exactly the same symptoms as TDK's disks.
All unreadable disks are in perfect condition, don't have any scratches, were not exposed to the sun or heat, and were burned just some month ago (by the way, i burned a lot of other CDs after those, and they are readable (for the time being, at least)).
Now, i actually have 3 questions:
1)Why i have those problems?
2)Is (or how) to make those disks readable again?
3)Could it be that there would be a similar problems with another disks burned with that CD-RW?
Probably if an answer to the first question would be found, the other two would be answered too, but maybe not.
BTW: I though it could be usable to include some CD Diagnostic's
reports here. They seem to contain a lot of interesting information (though i don't understand it). Especially interesting seems to the a following sentence: "Volume size appears suspicious, header says 160238 while track is 11250 blocks.". Actually, all the disks are more then half full, so indeed it seems to be very strange.
++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++
The following information was collected by CD Diagnostic
Copyright 1997-2000, CD-ROM Productions
ISO-9660 data track
Volume ID: 0009221426
System ID:
Volume size: 160238
Volume set size: 1
Volume in set: 1
Block size (bytes): 2048
Path table size (bytes): 9830
Path table (L): 22
Optional path table (L): 0
Path table (M): 27
Optional path table (M): 0
Root directory block: 1046
Volume Set:
Publisher:
Data preparer: CeQuadrat 32bit ISO-9660 Formatter Copyright (c) 1995 by CeQuadrat GmbH
Application:
Copyright file:
Abstract file:
Bibliography file:
Volume created: 9/22/00 14:26:13
Volume modified: 9/22/00 14:29:26
Volume expires: 11/8/62 8:27:57
Volume effective: 11/8/62 8:27:57
---------------------------- Big-endian format fields -----------------
Volume size: 160238
Volume set size: 1
Volume in set: 1
Block size (bytes): 2048
Path table size (bytes): 9830
Root directory block: 1046
++++++++++++++++++++++++++++++++++++++++++++++++++ +++++++++++++++
++++++++++++++++++++++++++++++++++++++++++++++++++ +++++++++++++++
The following information was collected by CD Diagnostic
Copyright 1997-2000, CD-ROM Productions
Table of Contents
There are a total of 2 tracks on CD, plus the lead-out.
ATIP Reference Power = 4, Reference Speed = 0
Disc manufacturer: Taiyo Yuden Company Limited Type: Cyanine (green) or Azo (blue)
Track 0 occupies 11250 blocks (2 Min, 30 Sec, 0 Frames).
This track contains data in ISO-9660 format and also contains Joliet format directory information.
Track 1 occupies 0 blocks (0 Min, 0 Sec, 0 Frames).
This track is marked as being blank.
There are 324823 free blocks in this track.
Error reading track data from CD, no further information available
Lead-out track starts at block 11250.
---------------------------------------------
Data track 0 recorded as part of session 1.
Volume size appears suspicious, header says 160238 while track is 11250 blocks.
This track has an application identifier of " ".
There are 479 accessible files and 759 directories contained in this track.
There are 13283 files in the directory which are not recorded in this track.
The post-gap for this disc is either missing or invalid.
---------------------------------------------
There are one or more conditions that make replication of this disc questionable.
++++++++++++++++++++++++++++++++++++++++++++++++++ +++++++++++++++
++++++++++++++++++++++++++++++++++++++++++++++++++ +++++++++++++++
The following information was collected by CD Diagnostic
Copyright 1997-2000, CD-ROM Productions
Device name YAMAHA CRW6416S
Revision 1.0d
Date of revision 30/05/00
Read CDDA command 0xbe
Raw read command 0xbe
Track information command 0x52
Using 10-byte commands False
Loading mechanism Tray
Bar code reading supported False
UPC code is read True
ISRC code is read True
Maximum reading speed 2822 Kbps, 16X
Device buffer size (K) 2048
Multisession capable True
Mode 2 Form 1 supported True
Mode 2 Form 2 supported True
Digital output on port 1 False
Digital output on port 2 False
Audio play supported True
Reading CDDA supported True
Accurate CDDA positioning True
Inactivity spin-down 16 seconds
Device capabilities read/write both CD-RW & CD-R
++++++++++++++++++++++++++++++++++++++++++++++++++ +++++++++++++++
I have Yamaha CRW6416S drive, SCSI, with the latest (1.0d) firmware upgrade (on Pentium 166, 32RAM, BTC IDE CDROM X12(non-functional, though), Win98).
The problem is that suddenly it couldn't read some disks (TDK's light-green metallic disks and Verbatim's blue). The CDs that couldn't be read were burned by that own CD-RW, and some time ago the same disks could be read and used without any problem.
Now, sometimes when i insert those CDs (even if autonotification is off), it hangs a PC (the CD-RW tries to read a disk for a very long time, then stops, and it is not even possible to eject a CD. Then, it is not enough to reboot if you want to reject CD - i have to power down), other times (most of the times, actually) i could browse CD's contents, but when i try to open a text file, or run a program, i get an empty file or a message that an application is not a valid Win32 program, respectively. When i right-click on most files on those disks and choose "Properties" from a pop-up menu, it crashes an Explorer (exception in module CRYPT32.DLL, and sometimes in KERLEL32.dll). When i try to copy a file, i get a message "Device doesn't recognize the command". What is interesting, is that some files are not empty, could be copied, and it's properties could be viewed without crashing anything.
Now, there is some distinction between TDK's and Verbatim's disks:
TDK's either freeze up the system or their contents could be browsed but not used. From the other side, Verbatim's never freezes anything, and sometimes they are fully functional, but other times when you insert Verbatim's CD it appears to be empty, and when you check disk's properties it shows that CD has 2GB of used space.
When i try to run CD-R Diagnostic on those disks, i get a warning: "Since the first track on that disk doesn't start at block 0, an implicit data track is being assumed to be present from block 0 to block 11249".
When i try to copy most of files with CD Diagnostic, i get an error: "Block passed end of recording on media. Sense = 21 00", and though the file is copied (it takes up space), it is still not a valid file.
All the disks (readable and unreadable) were burned using CeQuadrat's WinOnCD 3.60.420 .
Any attempt to read problematic CDs from Linux partition results in a total failure (even a directory tree couldn't be read. But at least it never hangs a PC).
Also, have some GPT CDs (those were burned with some other CD-RW), which also have light-green colored recording layer (but lighter), and they also were readable some time ago, but now they have exactly the same symptoms as TDK's disks.
All unreadable disks are in perfect condition, don't have any scratches, were not exposed to the sun or heat, and were burned just some month ago (by the way, i burned a lot of other CDs after those, and they are readable (for the time being, at least)).
Now, i actually have 3 questions:
1)Why i have those problems?
2)Is (or how) to make those disks readable again?
3)Could it be that there would be a similar problems with another disks burned with that CD-RW?
Probably if an answer to the first question would be found, the other two would be answered too, but maybe not.
BTW: I though it could be usable to include some CD Diagnostic's
reports here. They seem to contain a lot of interesting information (though i don't understand it). Especially interesting seems to the a following sentence: "Volume size appears suspicious, header says 160238 while track is 11250 blocks.". Actually, all the disks are more then half full, so indeed it seems to be very strange.
++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++
The following information was collected by CD Diagnostic
Copyright 1997-2000, CD-ROM Productions
ISO-9660 data track
Volume ID: 0009221426
System ID:
Volume size: 160238
Volume set size: 1
Volume in set: 1
Block size (bytes): 2048
Path table size (bytes): 9830
Path table (L): 22
Optional path table (L): 0
Path table (M): 27
Optional path table (M): 0
Root directory block: 1046
Volume Set:
Publisher:
Data preparer: CeQuadrat 32bit ISO-9660 Formatter Copyright (c) 1995 by CeQuadrat GmbH
Application:
Copyright file:
Abstract file:
Bibliography file:
Volume created: 9/22/00 14:26:13
Volume modified: 9/22/00 14:29:26
Volume expires: 11/8/62 8:27:57
Volume effective: 11/8/62 8:27:57
---------------------------- Big-endian format fields -----------------
Volume size: 160238
Volume set size: 1
Volume in set: 1
Block size (bytes): 2048
Path table size (bytes): 9830
Root directory block: 1046
++++++++++++++++++++++++++++++++++++++++++++++++++ +++++++++++++++
++++++++++++++++++++++++++++++++++++++++++++++++++ +++++++++++++++
The following information was collected by CD Diagnostic
Copyright 1997-2000, CD-ROM Productions
Table of Contents
There are a total of 2 tracks on CD, plus the lead-out.
ATIP Reference Power = 4, Reference Speed = 0
Disc manufacturer: Taiyo Yuden Company Limited Type: Cyanine (green) or Azo (blue)
Track 0 occupies 11250 blocks (2 Min, 30 Sec, 0 Frames).
This track contains data in ISO-9660 format and also contains Joliet format directory information.
Track 1 occupies 0 blocks (0 Min, 0 Sec, 0 Frames).
This track is marked as being blank.
There are 324823 free blocks in this track.
Error reading track data from CD, no further information available
Lead-out track starts at block 11250.
---------------------------------------------
Data track 0 recorded as part of session 1.
Volume size appears suspicious, header says 160238 while track is 11250 blocks.
This track has an application identifier of " ".
There are 479 accessible files and 759 directories contained in this track.
There are 13283 files in the directory which are not recorded in this track.
The post-gap for this disc is either missing or invalid.
---------------------------------------------
There are one or more conditions that make replication of this disc questionable.
++++++++++++++++++++++++++++++++++++++++++++++++++ +++++++++++++++
++++++++++++++++++++++++++++++++++++++++++++++++++ +++++++++++++++
The following information was collected by CD Diagnostic
Copyright 1997-2000, CD-ROM Productions
Device name YAMAHA CRW6416S
Revision 1.0d
Date of revision 30/05/00
Read CDDA command 0xbe
Raw read command 0xbe
Track information command 0x52
Using 10-byte commands False
Loading mechanism Tray
Bar code reading supported False
UPC code is read True
ISRC code is read True
Maximum reading speed 2822 Kbps, 16X
Device buffer size (K) 2048
Multisession capable True
Mode 2 Form 1 supported True
Mode 2 Form 2 supported True
Digital output on port 1 False
Digital output on port 2 False
Audio play supported True
Reading CDDA supported True
Accurate CDDA positioning True
Inactivity spin-down 16 seconds
Device capabilities read/write both CD-RW & CD-R
++++++++++++++++++++++++++++++++++++++++++++++++++ +++++++++++++++