Restart your Mac after you do this so OS X will rebuild some of the files.Ī small amount of your computer’s memory, called “non-volatile random-access memory” or NVRAM, stores certain settings in a location that OS X can access quickly. Some of the files or directory might not exist on your Mac so don’t worry about it if it isn’t there. CD Info.cidb (from ~Home/Library/Preferences)./System/Library/Caches/ (a directory).~/Library/Caches (your local Library directory).Deleting them will allow OS X to create a fresh copy of them.Delete the following files from your Mac. Similarly some other files contains info about the settings and configuration of the drive and disk. Your Mac store the information of the every CD you put into the CD / DVD drive in a file called CD Info.cidb. Delete the following configuration file to create a fresh copy If you are using new macOS Sierra then read the post on how to repair disk permission on macOS Sierra and how to fix error found by disk utility in recovery mode. Disk Utility lets you verify and repair Mac OS X disks and permissions issues.To repair Disk permissions follow the below mentioned steps. Sometimes these permissions on system files differ from what it should be and this is what we repair using Disk Utility. A permission allows one application to “talk” with another application and so OS X wants permissions and ownership to be accurate and enabled to function properly. Run Disk Utility and Repair Disk Permissionīefore starting any troubleshooting, I would recommend you to repair disk permissions as it solves hundreds of problems.

What to do if CD / DVD Drive on my Mac keeps ejecting every CD / DVD 1. I am going to share the complete troubleshooting for this “CD / DVD keeps ejecting on Mac” issue which could be result of various reason like dust on lens,OS X issue, hardware fault. When I inserted any DVD in the external CD / DVD drive it did the same thing- ejected it.It keeps ejecting the CD / DVD automatically.Then I thought it must be a software problem so I did a research and found various troubleshooting steps to fix it. I thought its my CD / DVD drive which is faulty and needs to be replaced so I plugged in a USB CD / DVD drive to my Mac that I had purchased long time ago. My drive was working normal earlier today, then it went crazy. it sounds as though it is trying to read the disc, but fails. Soon after I put a CD or DVD in the drive, it spits it back out. My CD/ DVD drive on my iMac is going crazy.

Mac cd rom drive not working