Therefore, the MacOS software cannot recognize it. One of the reasons for the Mac OS startup disk missing issue is that the existing startup disk is damaged or does not work. Fix 3: Adjust The Internal Hard Drive with Another Startup Disk However, if it does not work, you have to reinstall the macOS on your device. Then, the Mac OS startup disk missing prompt or the question mark would not appear. If this process is successful and the disk repairs, you should restart the Mac device. After the second time that it disappears, release your hold on the keys.ĭo these steps for the following volume as well. You should stop pressing down on the keys before the second sound replay when it does so.įor models with a T2 Security chip, wait for the Apple logo to appear twice. Step 3: The Mac device would start playing the sound for the startup.
Step 2: Click the power button and then hold your finger down on Command-Options-P-R on the keyboard. You can reset the NVRAM in Mac devices to fix the problem when you see this part. One of the common signs of an issue of no startup disk on Mac is the appearance of the question mark for some seconds. We went through the various methods that can rectify this issue and presented the right methodologies here.
It is difficult to access the stored data without fixing the issue, or it can stop the device from switching on. The problem of no startup disk on Mac can appear in the Desktop/Finder or during the booting period. Ways to Fix the No Startup Disk Error on Mac Besides that, you should use different methods to fix the Mac OS startup disk missing problem before losing any data or files. You can download the CleanMyMac X application to check the system conditions, optimize the OS, disable background apps, and delete faulty apps/files. However, in some cases, the issue of no startup disk on a Mac can come up, which may affect the steady performance of the Mac device.
Also known as the internal hard drive, the startup disks hold most of the OS data and system files. In computers, the startup disks are one of the most important parts of the device.
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