In OS X Yosemite or later, you can also use Handoff to move Safari pages between your Mac and your iOS devices. Learn how to set up and use iCloud for Windows. Published Date: February 25, 2021.
Before you begin
The 'classic' Mac OS is the original Macintosh operating system that was introduced in 1984 alongside the first Macintosh and remained in primary use on Macs until the introduction of Mac OS X in 2001. Apple released the original Macintosh on January 24, 1984; its early system software was partially based on the Lisa OS and the Xerox PARC Alto computer, which former Apple CEO Steve Jobs. If you really want to get ambitious, you could install Bluestacks — a free PC- and Mac-compatible program that lets you run Android apps within a more traditional desktop operating system. Nanite descent mac os. Hopefully, you can log in to your Mac after a rebooting. Reinstall macOS in macOS Recovery mode. If you see a folder with question mark on the Mac, or get stuck at 'Create a computer account' on your M1 MacBook Air or M1 MacBook Pro, you can simply reinstall macOS to reset your Mac that can't log in. Big Sur compatibility. Big Sur is the latest version of macOS. It arrived on some Macs in November.
Make sure that your Mac is connected to the internet and using macOS Catalina or later. If using an earlier macOS, follow the password-reset steps for macOS Mojave or earlier.
Choose a reset option from the login window
To see one of the following password-reset options, click the question mark next to the password field in the login window. If you don't see a question mark, enter any password three times.
If you see the option to reset using your Apple ID
Click the option to reset using your Apple ID, then proceed as follows:
If your Mac restarts, skip to the next section, “If you see the option to restart and show password options.”
If your Mac doesn't restart, but immediately asks for your Apple ID credentials, enter that information and click Reset Password.
If you're asked to create a new keychain to store the user's passwords, click OK to restart your Mac.
If you're asked to select an admin user you know the password for, click “Forgot all passwords?”.
If you see a Reset Password window with the option to Deactivate Mac, click Deactivate Mac, then click Deactivate to confirm.
Enter your new password information, then click Next. If this window shows multiple user accounts, click the Set Password button next to each account name, then enter the new password information for each account.
When the password reset is completed, click Restart.
If you see the option to restart and show password options
Click the option to restart and show password reset options, then wait for your Mac to restart.
You're then asked to take one of these steps:
Sign in with your Apple ID. You might also be asked to enter the verification code sent to your other devices.
Enter your FileVault recovery key. You received it when you turned on FileVault and chose to create a recovery key instead of allowing your iCloud account (Apple ID) to unlock your disk.
Select a user that you want to reset the password for, then click Next.
Enter your new password information, then click Next.
When the password reset is completed, click Restart.
If you see the option to reset using your recovery key
Click the option to reset using your recovery key, then enter your FileVault recovery key. You received it when you turned on FileVault and chose to create a recovery key instead of allowing your iCloud account (Apple ID) to unlock your disk.
Enter your new password information, then click Reset Password.
If you can't reset your password
Learn what to do if you can't reset your password.
Hold the option key down while booting, see if OS X appears and select it to boot from, then reset the StartupDisk in System Preferences again.
If that doesn't work, I suspect a hosed GUID partiton table, backup what you can out of Windows to a external drive and disconnect.
Next read this to recover data out of your OS X parittion if you don't have a backup
Can You Os
Hold c or option boot off the installer disk and use Disk Utility to zero erase the entire drive and reinstall as follows