Q: My CD/DVD Drive on my iMac keeps ejecting every CD/DVD when I put a CD/DVD in the drive. It sounds like it tries to read the disc, buy fails finally. I thought maybe my Mac SuperDrive needs to be replaced so that I plugged in an external USB SuperDrive to my Mac. But fortunately, both of them ejected CD/DVD. How to fix this 'CD/DVD drive keeps ejecting on Mac' issue?
A: 1. Run disk utility and repair disk permission.
1). Choose Go > Utilities.
2). Double-click Disk Utility.
3). Select the volume in the left pane for which you want to repair permissions.
4). Hit the First Aid tab.
5). Select the volume to which you want to install the Adobe application.
6). Click Repair Disk Permissions.
2. Delete the configuration file to create a fresh copy.
3. Reset the NVRAM/PRAM and SMC.
4. Delete the Finder's preference files.
5. Clean the SuperDrive's slot with compressed gas/Vaccum Cleaner.
Q: The Mac superdrive won't read DVD video discs. It reads blank ones but not video discs with content. It comes up with an error message 'This computer can't read this disc' when I put a DVD video disc into the Mac SuperDrive.
A: The simplest solution of this DVD won't play on Mac SuperDrive problem is buying an external USB SuperDrive for Mac and later you can upgrade to a new Mac which already have an external to use.
Though all of those CD/DVD drive not working solutions are useful, you still will encounter many more unexpected & new SuperDrive not working issues. So, the once-for-all solution to successfully watch new DVD movies/videos is ripping DVD to Mac with the help of best DVD ripper for Mac before SuperDrive doesn't work.
By default, Mac starts from its built-in hard disk, but a startup disk can be any storage device that contains bootable contents that compatible with your Mac. For example, if you install macOS or Microsoft Windows on a USB drive, your Mac can recognize that drive as a startup disk. This guide provides 2 ways to boot a Mac from a USB flash drive.
- You'll not want to waste resources on the device such as connecting a permanent monitor or keyboard/mouse combo. Whatever your purpose for the new Mac mini, we'll show you the basics of what you'll want to set up to run your new Mac mini without a monitor. Make certain the new Mac mini is properly configured; Screen Sharing vs Remote Management.
- It sounds obvious, but since this relies on a wire - either a USB cable or HDMI cable - if it's not connected properly then it won't appear on your desktop. Assuming it's plugged in correctly, not wobbly or loose, the cable could be at fault. Try connecting the same device with a different cable. Damaged USB or flash drive port.
Requirement
Starting up your Mac from an external disk requires the following:
- Intel-based Mac.
- Bootable USB thumb drive formatted with a GUID partition type and containing an OS X installer or a usable operating system.
Let's see how to boot a Mac from a bootable USB drive and what to do if your Mac doesn't start up from it. Google drive mac os x yosemite.
Restart your computer. Sometimes you get lucky, and the easiest solution ends up fixing the biggest.
Way 1: Boot Mac from USB Drive using Startup Manager
Imac Usb Ports Not Working
Getting your Mac to load from a USB drive is fairly straightforward. Use the following steps, you can easily set Mac boot from an external drive in Startup Manager, so it'll only boot from USB that one time.
Step 1: Insert the USB boot media into a USB slot.
Step 2: Turn on your Mac (or Restart your Mac if it's already on).
Step 3: Press and hold the Option key immediately after you see the Apple logo. Holding that key gives you access to OS X's Startup Manager. Once the Startup Manager screen appears, release the Option key. The utility will look for any available drives that include bootable content.
Step 4: Using either the pointer or arrow keys on the keyboard, select the USB drive you wish to boot from. Once selected, either hit the Return key or double-click your selection. The machine will start to boot from the USB drive.
Way 2: Set a Mac Boot from USB Drive using Startup Disk
When you use Startup Disk preferences to set Mac boot from an external drive, so it'll boot from that disk until you choose a different one. Here is how: How to save as jpeg on mac.
Step 1: Go to Apple menu > System Preference, then click Startup Disk.
Step 2: Click the locked icon and then enter your administrator password.
Step 3: Select External drive as the startup disk, then restart your Mac.
What to do if your Mac does not boot from the selected drive
Free download word 2016 for mac. If you see a message prompts that your security settings do not allow this Mac to use an external startup disk, check the External Boot setting in Startup Security Utility, and then allow your Mac to use an external startup disk.
Step 1: Open Startup Security Utility.
Mac Mini Usb Audio Codec Not Working
Turn on your Mac, then press and hold Command (⌘) + R immediately after you see the Apple logo. Your Mac starts up from macOS Recovery. When you see the macOS utility window, choose Utilities > Startup Security Utility from the menu bar. When you're asked to authenticate, click Enter macOS Password, then choose an administrator account and enter its password.
Step 2: Select 'Allow booting from external media'.
If you want to select an external startup disk before restarting your Mac, quit Startup Security Utility, then choose Apple menu > Startup Disk.
Note: If you're using Boot Camp in a dual-boot Windows/OS X environment, you may be unable to boot negatively into supported versions of Microsoft Windows XP, Windows Vista or Windows 10 operating systems installed on external USB hard drive.
Make sure disk has been formatted with a GUID partition type
Intel-based Macs support starting from an external USB storage device's volume that has been formatted with a GUID partition type. If you wish to boot from the drive, it's important to format the partition as 'GUID Partition Table' rather than either of the other two ahead of time when you use that drive as a bootable drive.
Mac Mini Usb C To Hdmi Not Working
Make sure your disk is bootable
Volumes that aren't bootable and don't contain a copy of a valid operating system aren't listed in Startup Disk or Startup Manager. Make sure the external drive you're trying to start from contains a usable operating system.
