Checking the CD/DVD installation media

Support knowledgebase (hmeyer_install_media)

Request

You are not sure if one of the installation CD's (or the DVD) might have a physical defect. You would like to check on this.

Procedure

Run the following command as root:

  dd if=/dev/cdrom of=/dev/null

(If the symbolic link /dev/cdrom doesn't exist, or is incorrect, then you have to replace /dev/cdrom by the appropriate device file. E.g. /dev/hdc if your CD/DVD drive is connected to the master of the secondary IDE port. This will also be the case, if you don't have Linux installed already, and therfore have to use the rescue system to do the checking.)

If the media is fine, you should get a result like the following:

  linux:~ # dd if=/dev/cdrom of=/dev/null
  1316996+0 records in
  1316996+0 records out

If, on the other hand, a physical defect on the media prevents the data from being successfully read, you will get an error message.


Keywords: CD, DVD, DEFECT, READ, ERROR

SDB-hmeyer_install_media, Copyright SuSE Linux AG, Nürnberg, Germany - Version: 04. Jul 2001
SuSE Linux AG - Last generated: 01. Aug 2001 by hmeyer (sdb_gen 1.40.0)