Your Photos library holds all your photos, albums, slideshows, and print projects. If your library is large, and you want to free up storage space on your Mac, turn on iCloud Photo Library and use Optimize Mac Storage, or move your library to an external drive.
Before you start, be sure to back up your library.
You can store your library on an external storage device, such as a USB or Thunderbolt drive formatted as APFS or Mac OS Extended (Journaled).1 Find out how to check the format of your external storage device.
Final word on photo management on Mac. There are basically two things you need to remember to bring order into your photographing life: Before you get to organization and management, be sure to unclutter your photo library. Apr 22, 2015 When you first set up Photos for Mac, it asks you to choose a library. This becomes your default library, or the System Photo Library in Apple's parlance. Manually copy your library to an external storage device: Drag the Photos library (by default in the Pictures folder on your Mac) to your storage device to create a copy. If you have more than one photo library, be sure to back them all up. Important: If any of your image files are stored outside your photo.
To prevent data loss, Apple doesn't recommend storing photo libraries on external storage devices like SD cards and USB flash drives, or drives that are shared on a network.
After you open your library from its new location and make sure that it works as expected, you can delete the library from its original location.
In a Finder window, go back to your Pictures folder (or whichever folder you copied your library from) and move Photos Library to the trash. Then choose Finder > Empty Trash to delete the library and reclaim disk space.
If you have multiple libraries, here's how to open a different one:
Photos uses this library until you open a different one.
If you have a permissions issue with your library, you might be able to resolve the issue by using the Photos library repair tool.
1. You can't move your library to a disk that's used for Time Machine backups.
2. If the volume isn't formatted APFS or Mac OS Extended (Journaled), or has been used for Time Machine backups but hasn't been erased, this checkbox will either not be present, or won't be selectable after unlocking. Erase and reformat the drive for this option to be available.
By default, the photos and videos you import into Photos are stored in the Photos library in the Pictures folder on your Mac. When you first use Photos, you create a new library or select the library that you want to use. This library automatically becomes your System Photo Library. See System Photo Library overview.
WARNING: To avoid accidentally deleting or corrupting a Photos library, do not alter the contents of a library in the Finder. If you want to copy, move, or transfer files, first export them from the Photos library; do not manually access or change the library in the Finder.
If you import items from a storage device or another folder on your Mac, you can have Photos leave the items in their original locations so they don’t take up extra space on your Mac.
How to run a Python scriptYour best way to get started with Python on Mac OS X is through the IDLEintegrated development environment, see section and use the Help menuwhen the IDE is running.If you want to run Python scripts from the Terminal window command line or fromthe Finder you first need an editor to create your script. Where is library in mac os x. If youare completely new to Python you should start reading the tutorial introductionin that document.If you are familiar with Python on other Unix platforms you should read thesection on running Python scripts from the Unix shell.
No More iTunes. How to use Finder in macOS Catalina to Sync and Restore iPhone; Steps to copy music from Mac to iPhone, iPad, or iPod. Open iTunes (macOS Mojave and below) or Finder (macOS Catalina and above) on your MacBook; Connect your iPhone to your Mac using a USB/USB-C cable or with a previously established device WiFi connection. Launch iTunes and connect your iPhone to Mac. On iTunes, make sure you are in 'Music' library. Then click 'File Add File to Library' and locate your Mac music. Select the songs you wish to sync and press 'Open' to add them to iTunes music library. Copy music library from mac to iphone. Sync music between your Mac and iPhone or iPad. You can sync all or a selection of your music on your Mac to your iPhone, iPad, or iPod touch. If you subscribe to Apple Music, your music is transferred automatically to all your devices and no syncing is required.
Although storing files outside your Photos library is a great way to save space on your Mac, be aware that:
If you use iCloud Photos, photos and videos that are outside the Photos library aren’t stored in iCloud and won’t be accessible to any other Mac or device that uses iCloud Photos.
If you disconnect the device where the files are located, or move or rename the files in the Finder, Photos won’t be able to locate them.
Tip: If you use iCloud Photos, another good way to save space is to turn on Optimize Mac Storage in iCloud preferences. iCloud Photos then places smaller photo files on your Mac as needed, but all the full-size photos and video are still accessible to your Mac from iCloud.