Removable-media drive problems

Use this information to diagnose and resolve removable-media drive problems in the blade server.

IBM updates the support website with the latest tips and techniques that you can use to resolve any problems. Go to the BladeCenter support search website at to see if any service bulletins have been generated. In the Search field, type 7875, retain tip, and chassis.

Follow the suggested actions in the order in which they are listed in the Action column until the problem is solved. The removable-media (CD, DVD, or diskette) drives are shared BladeCenter unit resources. First, make sure that the drives are assigned to the blade server; then, see the following table and Solving shared BladeCenter resource problems.

  • See Parts listing to determine which components are consumable, structural, or CRU parts.
  • If an action step is preceded by "(Trained technician only)," that step must be performed only by a trained technician.
Symptom Action
All removable-media drive problems.
  1. The media-tray select button LED on the front of the blade server is lit, indicating that the blade server is connected to the shared removable-media drives.
  2. Check the function of the shared BladeCenter unit resources. See Solving shared BladeCenter resource problems.
  3. Run the Setup utility and make sure that the drive is enabled. See Setup utility menu.
  4. For SAS storage drive problems, make sure that the correct device driver is installed. For the latest device drivers, go to
  5. Reseat the battery - See Removing the battery and Installing the battery.
  6. Replace the battery - See Removing the battery and Installing the battery.
  7. (Trained technician only) Replace the system-board assembly - See Removing the system-board assembly and Installing the system-board assembly.
The CD or DVD drive is detected as /dev/sr0 by SUSE Linux. (If the SUSE Linux operating system is installed remotely on a blade server that is not the current owner of the media tray [CD or DVD drive, diskette drive, and USB port], SUSE Linux detects the CD or DVD drive as /dev/sr0 instead of /dev/cdrom.) Establish a link between /dev/sr0 and /dev/cdrom as follows:
  1. Enter the following command:
    rm /dev/cdrom; ln -s /dev/sr0 /dev/cdrom
  2. Insert the following line in the /etc/fstab file:
    /dev/cdrom /media/cdrom auto ro,noauto,user,exec 0 0