They all stay compiled into one 'App' file. Taking advantage of this, we can move all of our hefty apps and support files over to an external drive to free up space on the built-in drive, and in short, speed up your system. Choosing an External Drive. The best external drives for Mac computers are undoubtably G-DRIVE ones. They're reliable. What’s new about the latest Mac computers and how to troubleshot external hard drive read-only on M1-equipped Mac? Or you didn’t get one of the M1 chip Macs and you just bought a new Mac of your own with an Intel chip. This article will work for you as well. Methods to fix external hard drive read only on M1-equipped Mac. Nov 10, 2020 Below you will learn how to format an external hard drive that works with Mac and PC. External Hard Drive Compatible With Mac And PC. To set up, you plug your external drive into your Mac. Because your Mac formats your external hard drive as Mac OS Extended (Journaled) file system. And you are going to need to do that step first. Backup Plus for Mac Portable Drive USB 3.0 1TB STBW1000900 2-year limited warranty. 1TB 1024.0: USB 3.0: 123.4mm: 81.1mm: 0.224kg: Backup Plus portable drive for Mac Thunderbolt STBW1000401 1TB 1024.0: Thunderbolt, USB 3.0: 130mm: 81mm: Backup Plus for Mac Desktop Drive USB 3.0 2TB STCB2000900 2-year limited warranty. Drag your library to its new location on the external drive. If you see an error, select your external drive's icon in the Finder, then choose File Get Info. If the information under Sharing & Permissions isn't visible, click the triangle button, then make sure the 'Ignore ownership on this volume' checkbox is selected.
Prepare your drive
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). However, you can't move your library to a disk that's used for Time Machine backups. Find out how to check the format of your external storage device.
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.
Move your Photos library to an external storage device
- Quit Photos.
- In the Finder, go to the external drive where you want to store your library.
- In another Finder window, find your library. The default location is Users > [username] > Pictures, and it's named Photos Library.
- Drag your library to its new location on the external drive. If you see an error, select your external drive's icon in the Finder, then choose File > Get Info. If the information under Sharing & Permissions isn't visible, click the triangle button , then make sure the 'Ignore ownership on this volume' checkbox is selected. If it's not selected, click the lock button to unlock it, enter an administrator name and password, then select the checkbox.*
- After the move is finished, double-click Photos Library in its new location to open it.
- If you use iCloud Photo Library, designate this library as the System Photo Library.
Delete original library to save space
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.
Open another Photos library
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If you have multiple libraries, here's how to open a different one:
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- Quit Photos.
- Press and hold the Option key while you open Photos.
- Select the library that you want to open, then click Choose Library.
Photos uses this library until you open a different one.
Learn more
If you have a permissions issue with your library, you might be able to resolve the issue by using the Photos library repair tool.
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* 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.