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Mac OS Extended Journaled: the pros and cons of the file system

  • Oct 18, 2025
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Since the hard drives of the newer MacBooks are pre-formatted with "Mac OS Extended Journaled" is the decision to do this also with the external data carriers. What are the pros and cons for you to learn here.

Advantages of the "Mac OS Extended Journaled"format

Formatting with Mac OS Extended Journaled win in the Apple universe with a variety of benefits.
  • With this formatting, you can save files larger than 4 gigabytes. Thus, you can easily easily large video files, and libraries. The common FAT32 formatting on hard disks and USB-Sticks can take only files with a maximum size of 4 gigabytes.
  • You can read with "Mac OS Extended Journaled" formatted disk under Windows (but not describe).
  • You can use Apple's own backup software "Time Machine". This only works with disks that have been formatted with Mac OS Extented Journaled.
  • What happens on the hard disk, is recorded ("Journaled") - the aim is to avoid a crash data loss in the system.
Apple's "Time Machine"Backup

Disadvantages of the "Mac OS Extended Journaled"format

Especially in cooperation with other operating systems, you have the Apple formatting problems:
  • The data carrier can be read by Windows, but not described. For external data carriers, which are also connected to the Windows computer, the "Extended Journaled"formatting so.
  • Devices such as PlayStation, Xbox, or any other Multimedia Player can start with the file format often nothing at all and refuse to even read this.

When should you use the "Mac OS Extended Journaled"formatting?

  • You want to use your external drive as a Backup disk for your Mac at home on the Desk, you should be sure to format it with "Mac OS Extended Journaled".
  • If you want to take the hard drive more often and with Known exchange data, you should prefer to FAT32. This formatting can be read by most operating systems, and described.
Extended Journaled: Large Files

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