convert external drive to apfs without erasing data

How to Convert an External Drive to APFS Without Erasing Data

When considering converting an external drive to APFS, it's essential to understand the process and potential risks involved. Before formatting a disk, always back up at least one important file to avoid any data loss.

ExFAT is a program that can run on both Windows and Mac computers, making it a suitable option for importing an external hard drive to a Mac. However, if you're using a Mac with macOS Sierra or later, it's recommended to use APFS (or the older FAT) when importing an external drive.

APFS is designed to be more efficient and reliable than its predecessor, HFS+. It replaces the existing HFS+ file system, which has been in use since the early 1990s. Apple File System (APFS) is a new file system for macOS, iOS, and tvOS that is optimized for encryption, making it suitable for flash storage and solid-state drives.

Converting to APFS is a two-step process. First, you will need to format your drive with the APFS file system. Then, you will need to install macOS on the drive. However, if you're using a Mac with Apple File System (APFS), you can convert it to another file system without erasing your data.

To install macOS on an APFS-formatted drive:

1. Select APFS from the Format drop-down menu.

2. Make sure to back up your data before beginning the process, as formatting your drive with APFS will erase all of your data.

3. Download the macOS installer from the App Store and follow the prompts.

4. When asked, select your APFS-formatted drive as the destination.

By following these steps, you can successfully convert an external drive to APFS without erasing your data.

Convert external drive to apfs without erasing data