The drive uses laser light to write data onto the surface of the disc. Writing errors can occur if you use a damaged disc. Make sure to prevent the conditions below before you start to write a disc.

1. Do not use multitasking. Disable the screen saver.
   • A buffer under-run can occur if the system uses multitasking while the drive writes data.
2. Do not let any outside computer access the host PC while the drive writes data.
   • An error can occur if another user accesses a network printer while the drive writes data.
3. Disable the CD auto-run feature on all drives.
   • If you insert an auto-run CD into another drive within the same system while the drive writes data, this can cause an error.
4. It is recommended that you use the image file format when you write a large number of small-sized files.
   • When there are many small files to write, the transfer rate decreases and the Buffer underrun protection feature works at a more frequent rate. This causes a lower writing quality.
   • If you are doing a CD-to-CD copy, it is not necessary to verify if you have available space on your hard disc.
     However, in the case of image files, we recommend that you make sure you to have at least two times the amount of space needed for the data on your hard disc. This is because image files are copied to the hard disc before they are copied to the media.
5. Use a regulation-length (50 cm) or shorter S-ATA cable.
   • If you use an S-ATA cable longer than 50 cm, this can cause a transmission error.
6. Do not use more than one type of writing software.
   • Before you install a writing program, make sure to first uninstall existing versions of the program or other writing programs. After you uninstall any software, restart the PC.
     (The Windows operating system can be damaged if you install different language versions)

1. The disc has bad properties, or there are other discs with bad properties under the same ID.
   The drive examines the disc properties to determine the best write conditions for the type of disc. Because the two types of disc have the same property data but different properties, it is often not possible to use the same settings. It is necessary to decrease the writing speed to make the writing more stable.
   If discs from two different disc makers have the same writing speed according to the labels, but actually have different writing speeds, it is necessary to reduce the writing speed.
   
2. Samsung standards to decrease writing speed
   • Standard 1: If there are high-speed discs in the market that have very bad property data, the writing speed is decreased. This also happens if there are low-speed discs with the same ID.
   • Standard 2: Discs for which the speed was reduced, will be examined again. If low-speed discs are no longer available in the market under the same ID as a high-speed disc, the decreased writing speed will no longer apply to the high-speed disc.