Re: Re: unable to read some of a DVD contents
Yes. as Thomas and Volker pointed that the media is the one to be blamed. I used better quality DVD, the most expensive one in the store :), and I've 5 successful burns and all passed the integrity check. Thanks for all your helps, Kadir --- This email contains confidential information. If you have received this email in error, please delete it immediately, and inform us of the mistake by return email. Any form of reproduction, or further dissemination of this email is strictly prohibited. Also, note that the opinions expressed in this email are those of the author and are not necessarily those of the Fonterra Co-operative Group Limited. http://www.fonterra.com/ ---
Re: unable to read some of a DVD contents
I just had to trash a previously used DVD-RW which failed to pass the checksum test with errors at the very start of the image. After a test re-write it failed to deliver the last 2 MB (but the start of the test image was ok). A third re-write yielded missing 300 MB at the end of the media. The fourth try failed with :-[ PERFORM OPC failed with SK=3h/ASC=73h/ACQ=03h]: Input/output error According to keys.txt : 3 73 03 POWER CALIBRATION AREA ERROR (Not much idea what that means but it looks ugly and fatal) I successfully tested another DVD-RW from the same spindle as the ill one. So the burner is not to blame. It is not about the manufacturer of the media, not even about the particular lot. It is not about the number of re-uses. The sucessfull DVD-RW is in heavy test use, has a nice collection of scratches ... and it works fine. The ill one had its third or fourth re-use, looks shiny and smooth ... As you mentioned, neither the burner nor the media is the one to blame so what is the thing that causes the test checksum to fail? Does that cause by the on-the-fly burn using growisofs? Thanks, Kadir --- This email contains confidential information. If you have received this email in error, please delete it immediately, and inform us of the mistake by return email. Any form of reproduction, or further dissemination of this email is strictly prohibited. Also, note that the opinions expressed in this email are those of the author and are not necessarily those of the Fonterra Co-operative Group Limited. http://www.fonterra.com/ ---
unable to read some of a DVD contents
Hi there, I've successfully burnt data (4 GB, around 1 files) to a DVD. I saw that all the files have been burnt to DVD with exact size. However, I couldn't read some of the files (corrupted ?) and this happened randomly (i.e. I burnt another ten DVDs with the same contents and the corruptions happened on different files). Here is the error message while copying the file (linux): cd:reading /media/cdrecorder1/ares_apca_pref_050520202.zip Buffer I/O error. and the message log output the following messages: May 13 12:10:59 kernel: scsi6: ERROR on channel 0, id 0, lun 0, CDB: Read (10) 00 00 05 71 15 00 00 23 00 May 13 12:10:59 kernel: Current sr3: sense key Medium Error May 13 12:10:59 kernel: Additional sense: Unrecovered read error May 13 12:10:59 kernel: end_request: I/O error, dev sr3, sector 1426516 May 13 12:10:59 kernel: Buffer I/O error on device sr3, logical block 356629 If I copy the file in a windows box it gives me a cyclic redundancy error message. Below is the configuration of software and OS used: 1. OS Linux 2.6.9-5.0.5.ELsmp 2. growisofs - version 5.21 3. mkisofs 2.01 (i686-pc-linux-gnu) 4. burner - SONY DRU-700A (with latest firmware upgrade) Following is the growisofs command used: /usr/local/bin/growisofs -use-the-force-luke -v -iso-level 2 -pad -Z $g_device -R -J $buffer_path I wonder if anyone out there can point me out what's going wrong here. Thanks, Kadir --- This email contains confidential information. If you have received this email in error, please delete it immediately, and inform us of the mistake by return email. Any form of reproduction, or further dissemination of this email is strictly prohibited. Also, note that the opinions expressed in this email are those of the author and are not necessarily those of the Fonterra Co-operative Group Limited. http://www.fonterra.com/ ---
