Many users who are new to macOS may find that their operating habits are different from those they used to do with Windows.。Understand and become proficient in using the following commonly used macOS keyboard shortcuts，Can help you improve work efficiency： cut、Copy and paste •Command-X：Cut selected items and copy to clipboard。 •Command-C：Copy selected items to clipboard。 •Command-V：Paste the contents of the clipboard into the current document or application。 •Command-Z：Undo the previous command，Can be redone using Shift-Command-Z。 •Command-A：Select all。 •Command-F：Find an item in a document or open a Find window。 Window Management •Command-M：Minimize the frontmost window to the Dock。 •Command-W：Close the frontmost window。 •Command-Tab：Switch between open applications。 Screen capture and recording •Shift-Command-5：In macOS Mojave or later，Take a screenshot or record your screen。 •Shift-Command-3：Take a screenshot of the entire screen。 •Shift-Command-4：Take a screenshot of the selected area。 File manipulation and navigation •Command-N：Open a new window or tab。 •Command-Delete：Move selected items to Trash。 •Command-D：Copy selected files or folders。 System Operations •Command-Q：Exit current application。 •Option-Command-Esc：Force quit current application。 •Control-Command-Q：Lock screen now。 View and adjust •Command-Spacebar：Show or hide the focused search bar。 •Command-comma (,)：Open the preferences for the front application。 •Command – dispatch center：Show desktop。 Text Editing and Formatting •Command-B：Bold selected text。...
The startup screen may vary depending on your Mac model、Varies depending on factors such as operating system (macOS)。Some screens, such as the ban sign or question mark, mean you need to solve a problem first，Then the Mac can complete booting。For all Mac models，When you see the Finder menu bar、Desktop and Dock，This means that the startup is complete。today，The editor of MacW will take you to understand what the various interfaces displayed when Mac starts up represent.。 1. Forbidden symbol A circle crossed by a line or slash means that the selected startup disk contains a Mac operating system，But it's not macOS for your Mac。You should reinstall macOS on this disk。 2. Question mark A folder with a question mark means that the selected startup disk is not available，or does not include Mac OS。Learn how to fix problems with flashing question marks。 3. Blank Screen It is normal to have one or more blank screens during startup.。it may be black、grey、blue，It could also be a desktop picture。If no image appears on the screen after a while，Make sure your display is on、Connected and brightness turned up。 4. Apple Logo Your Mac displays the Apple logo after finding the local startup disk，This disk is the Mac's built-in startup disk or is directly connected to the Mac's startup disk。If your Mac cannot find your local startup disk，then it will try to use a network boot disk if one is available。As the boot process continues，You should see a progress bar or indicator showing the circle (which may or may not contain the Apple logo)。This screen may alternate with a blank screen multiple times。 If you're updating or reinstalling macOS，then this stage may take longer to complete。As the installation continues，The progress bar may move slowly and pause for a long time。Find out if your Mac seems to be stuck on this screen during the installation process or just after the installation is complete，what to do。 5. Rotating Earth When using a network boot disk，Your Mac displays a spinning globe instead of the Apple logo。When launching from macOS recovery function over the Internet，There will also be a rotating earth。As the boot process continues，You should see a progress bar，It may alternate with a blank screen multiple times。 6. Earth with warning symbol when your Mac tries to boot from macOS Recovery over the Internet and fails，You may see a globe with an exclamation mark。Your Mac may not be able to connect to the internet，Or it might be using a network configuration that's incompatible with macOS recovery features。Please try the following solutions： – Use Command-R on startup to try to use the built-in macOS recovery system，Rather than booting from macOS recovery over the Internet。 – Connect to the Internet using Ethernet instead of Wi-Fi，vice versa。 – Connect to the Internet from another network。 – Please try again later，Because the problem may be temporary。 7. Lock icon If your Mac uses a firmware password，then when you try to download a file from another disk or volume such as，external drive or macOS recovery) a lock icon appears when starting。Please enter your firmware password to continue。 8. PIN code to lock your system if your Mac is locked remotely via the Find My feature，then your Mac will ask for a PIN。Please enter a four-digit or six-digit password to continue。 9. Login window In the login window，Enter your user account password，to log into your Mac。If FileVault is open，then this action will also unlock your disk。You may see the default desktop picture in the background，After you select your account，This image may be changed to a desktop image of your choice。 By understanding these launch screens，You can better solve problems you encounter when your Mac starts up，Make sure your Mac starts up smoothly and works normally。
