Consider the following scenario:

• You have a computer that is running Windows Vista Service Pack 1 or Windows Server 2008.
• You use the built-in backup application to back up data to a slim-slot optical disc drive.
• The backup data requires multiple discs to save.
• After the first disc is full, you press the eject button to eject the disc.

In this scenario, you receive a “Preparing to eject” message in the notification area. However, the disc does not eject. When you press the eject button again, the disc ejects. However, when you put the disc back into the drive, the disc may be unreadable.

When you have a Windows Vista-based computer that is connected to a USB optical disc drive, and you resume the computer from Standby, you may receive a error message that resembles one of the following error messages:

STOP: 0×000000E4 (parameter1, parameter2, parameter3, parameter4)
STOP: 0×0000000A (parameter1, parameter2, parameter3, parameter4)

Notes

• The parameters in the error message vary, depending on the configuration of the computer.
• This issue may occur on a computer that is running Windows Vista, Windows Vista Service Pack 1 (SP1), or Windows Server 2008.
• Not all “0×000000E4″ or “0×0000000A” Stop errors are caused by this problem.

Consider the following scenario:

• On a ThinkPad X300 computer that is running Windows Vista, you enable the Disable optical drive option on the Power Management tab.
• You leave the system idle for more than 10 minutes, and the optical disk drive turns off.
• You perform a suspend-and-resume cycle or a hibernate-and-wake cycle on the computer.

In this scenario, the computer’s optical disk drive is intermittently not displayed in My Computer or in Device Manager.

Consider the following scenario:

• On a ThinkPad X300 computer that is running Windows Vista, you enable the Disable optical drive option on the Power Management tab.
• You perform a suspend-and-resume cycle or a hibernate-and-wake cycle on the computer.

In this scenario, the computer’s optical disk drive is intermittently not displayed in My Computer or in Device Manager.

Consider the following scenario:

• You share the optical drive of a Windows Vista-based computer, and then you insert a CD or DVD disc into the drive.
• You use a network connection to access the disc from a second Windows Vista-based computer.
• You replace the disc with a different disc.
• You try to access the new disc from the second computer by using the same network connection.

In this scenario, you receive an error message that resembles the following:

The wrong diskette is in the drive.
Insert correct diskette into drive \\path_of_shared_disc\name_of_shared_disc

If you restart the second computer, you can access the new disc by using the network connection.

Consider the following scenario:

• You have a Windows Vista-based computer that does not have an internal USB optical disc drive. Instead, an external USB optical disc drive is connected to the computer.
• You run an application that calls the AcquireExclusiveAccess routine in the Imapi2.dll file to exclusively use the optical disc drive on the computer.

In this scenario, you may notice that the external USB optical disc drive is removed from the Windows Vista operating system. When you reconnect the optical disc drive to the Windows Vista-based computer, the operating system does not recognize the optical disc drive. Additionally, a yellow exclamation mark (!) may appear next to the external USB optical disc drive in Device Manager. You may receive an error that resembles the following:

Error 38 (CM_PROB_DRIVER_FAILED_PRIOR_UNLOAD)

Note: The external USB optical disc drive can be displayed correctly in Device Manager after you restart the computer.

Consider the following scenario. You erase a rewritable media disc by using an external optical drive that is attached to a Windows Vista-based computer. For example, you click Erase this disc to erase a CD-RW disc in the external optical drive. Then, you use the “Safely remove hardware” feature to remove the external drive. In this scenario, the external drive is not removed as expected. Additionally, you experience the following symptoms:

• You receive an error message that resembles the following:
  

  The device Device_Name cannot be stopped because a program is still using it. Close any programs that might be using the device, then try again later.

• The external drive may continue to work correctly. However, you cannot remove the drive by using the “Safely remove hardware” feature.

Consider the following scenario. You connect a Toshiba Device Bay optical drive to a portable Toshiba computer that is running Windows Vista. To do this, you use a hot-swap operation, or you use a warm-swap operation. In this scenario, the drive is not recognized.

Note: In this scenario, a “hot-swap operation” means that you connect the drive while the computer is still running. A “warm-swap operation” means that you connect the drive while the computer is asleep, and then you wake the computer.

Consider the following scenario:

• You format an optical disc by using the Live File System component on a Windows Vista-based computer.
• You eject the disc soon after the formatting operation appears to be complete. Or, you eject the disc soon after you write a file to the disc, after the formatting operation is complete.
• You reinsert the disc.

In this scenario, the disc appears to be blank. Any files that were written to the disc after the formatting operation are lost. Additionally, you cannot write any files to the disc. This problem occurs only when you use the Live File System component to format the disk, and then you eject the disk soon after a write operation has occurred.

Serial Advanced Technology Attachment (SATA) optical drives, such as a CD or a DVD drive, may not be available after you start a Windows Vista-based computer.