What is Finder?
Finder is the app that gives a Mac its file system view and its desktop. It starts at login, stays running the whole time (its icon is always first in the Dock), and has no normal Quit command. Anything a Windows user does in File Explorer, such as browsing folders, copying files, ejecting a USB drive or opening a network share, a Mac user does in Finder.
The Finder window
- Sidebar: shortcuts grouped as Favorites (Recents, Applications, Desktop, Documents, Downloads, AirDrop), iCloud (iCloud Drive), Locations (the Mac itself, external drives, network servers) and Tags. Finder Settings controls which items appear.
- Views: Icon (
Cmd+1), List (Cmd+2), Column (Cmd+3) and Gallery (Cmd+4). Column view shows the folder path from left to right, which helps when a user cannot say where a file lives. - Path and status bars: View > Show Path Bar displays the full location at the bottom of the window, and View > Show Status Bar shows the item count and free space.
- Quick Look: select a file and press
Spaceto preview it without opening an app.
Shortcuts and menus a technician uses
| Task | How |
|---|---|
| File details, size and permissions | Get Info, Cmd+I; the Sharing & Permissions section is at the bottom |
| Show or hide hidden files | Cmd+Shift+. (period) toggles them |
| Open a path directly | Go > Go to Folder, Cmd+Shift+G, then type a path such as /Library or ~/Library |
| Open the user Library folder | Hold Option while the Go menu is open and choose Library |
| Connect to a network share | Go > Connect to Server, Cmd+K, then enter smb://server/share |
| Open Utilities (Terminal, Disk Utility, Activity Monitor) | Go > Utilities, Cmd+Shift+U |
| Move to Trash, empty Trash | Cmd+Delete, Cmd+Shift+Delete |
| Eject a drive | Eject icon in the sidebar, or select it and press Cmd+E |
Finder Settings (Cmd+,, called Preferences before macOS Ventura) holds options such as Show all filename extensions on the Advanced tab, which helps users spot a suspicious double extension on a download.
Network shares
Connect to Server takes a URL. smb:// is the normal choice for Windows file servers and NAS devices. afp:// is Apple's older file-sharing protocol and is being phased out, and nfs:// reaches NFS exports. Finder asks for credentials, mounts the share and lists it under Locations. The + button in the Connect to Server window saves an address as a favorite. Mounted volumes, including USB drives and shares, live under /Volumes.
Troubleshooting with Finder
- Finder is frozen: open Force Quit (
Cmd+Option+Esc) and select Finder. The button reads Relaunch instead of Force Quit, because Finder restarts rather than closing. - Cannot move or delete a file: open Get Info and check the Locked box and the user's privilege under Sharing & Permissions.
- "My file is gone": check Recents, search with Spotlight or the Finder search field, and check whether the file sits in iCloud Drive without a local copy (a cloud icon means it is not downloaded).
- External drive does not appear: Finder Settings can hide external disks from the desktop and sidebar. Disk Utility shows whether the drive is detected but not mounted.
- Share will not connect: confirm the server name or IP address, the share name and the credentials, and that SMB (TCP 445) is reachable.
Finder compared with File Explorer
Get Info maps to Properties, Connect to Server maps to typing \\server\share or mapping a network drive, and the hidden-files shortcut maps to View > Show > Hidden items in Windows 11. Paths differ too: macOS uses forward slashes and a single directory tree that starts at /, with no drive letters, while Windows uses backslashes and letters such as C:.
Finder on the CompTIA A+ exam
Finder falls under Core 2 (220-1202) objective 1.8, macOS features and utilities a technician should know. Expect scenario questions that describe a task and ask for the macOS tool. If a question asks where a Mac user browses files or connects to an SMB share, think Finder. If it asks how to show hidden files, think Cmd+Shift+.. If it asks for the Mac equivalent of File Explorer, the answer is Finder, not Spotlight, which searches, or the Dock, which launches apps.