Mac os help
Mac os help
I installed a Cent OS USB drive because I found one nearby but it didn’t appear. I tried resetting it using the removable battery method, but it didn’t work and it still shows white. Could another chip or component be interfering with the system?
Remove the hard drive and attempt to boot. This should avoid a disk error, indicating a firmware issue. After that, we can proceed with the repair based on the outcome.
Start the internet recovery process. Press the option key (Alt), command key and R during startup. If a spinning globe appears, recovery is active. Otherwise, you'll need another Mac to create a bootable installer so macOS can run. You might want to check with friends or colleagues to find someone who has one.
Removed the drive and nothing altered, likely a firmware issue.
I attempted to reset the system, entered recovery mode, tried the Linux boot option. I searched extensively online but found nothing functional. It seems like a missing Mac OS might be the issue, though I can't confirm. I'll try connecting with a friend to see if we can create a Mac OS USB key. If that works, I'll update. Thanks for your support!
Insert the hard drive back in. Set up your Mac's storage settings using the PRAM and NVRAM information. To clear the PRAM/NVRAM, follow these steps: Power off your Mac, then press and hold the Command + Option + P + R keys when you hear the startup sound. Keep holding the keys until you hear the second startup sound, then let go. Wait five minutes and turn off the Mac. After that, power it down again and do this. Shut down the Mac and then press and hold the Command R keys when you hear the startup sound. Release them when the Apple logo appears. Once the Mac starts, go to the OS X Utilities menu and choose Reinstall OS X, then click Continue. Go through the prompts until you complete the setup. If the second option fails, you may need a USB installer.