Drive ejects and reloads the disc during operation
Cause: This isn’t a problem; it’s a mechanism to clear the drive’s buffer. All CD-RW drives are provided with some buffer memory to smooth out the writing process. While some drives have a way to clear it out, some aren’t provided with any, in which case the drive might pop out the disc to clear the buffer memory.
Solution: Before buying a drive, make sure it has a way to clear out buffer memory. To find out what drives have this feature and which ones don’t, ask someone who already has the drive model you’re contemplating buying.