Consider the following scenario:

• You have a computer that runs Windows XP, Windows Vista, or Windows Server 2008.
• You plug a Secure Digital (SD) memory card into the computer while the write protection on the SD memory card is turned off.
• You put the computer to sleep or in hibernation.
• When the computer is asleep or in hibernation, you turn on the write protection on the SD memory card.
• You resume the computer and try to write to the SD memory card.

In this scenario, you may experience one of the following issues:

• The write operation may be committed on the SD memory card instead of being prevented by the write protection. Therefore, you may overwrite the data on the SD memory card unexpectedly.
• You may receive a warning when you try to write to the SD memory card. Therefore, you expect that the operation will be canceled. However, the operation seems to be successful. When you try to access the newly written data, you receive an error message that reports that the disk is corrupted.

In Windows Vista, when you use Windows Explorer to try to copy files to an Iomega REV drive that contains a write-protected disk, you do not receive an error message. Instead, a Mastering dialog box appears in which the Mastering option is enabled. When you click OK, and then you try to burn the files, you receive the following error message:

You can’t add files to this disc.

Then, the disk is ejected.

When you insert a disk that is not write-protected in the Iomega REV drive, and then you try to burn the files, you receive the following error message:

The disc in the drive is not a writable disc or it is full.

Then, the disk is ejected.