How to recover deleted/lost files from startup disk on macOS High Sierra?

Posted by Juno to Mac Data Recovery Tips on January 5th, 2018

Many Mac users have complained that they encounter data loss problem after upgrading to macOS High Sierra 10.13. At most of the time, when we lost files on Mac, we mean that losing files on Mac internal hard drive, namely, Mac startup disk. There are also cases that external drive can be recognized as startup disk.

We may lose files on startup disk after accidental deletion, format or drive becoming unmountable, inaccessible, corrupted. No need to be panic. This passage will introduce how to recover lost data from startup disk on macOS High Sierra 10.13. All we need is a free macOS High Sierra data recovery software - iBoysoft Data Recovery for Mac.

How to recover deleted/lost files from startup disk on macOS High Sierra?

On macOS High Sierra, there is a security mechanism named "System Integrity Protection" (SIP), which prevents any application from reading startup disk. And when we want to use iBoysoft Data Recovery for Mac to scan startup disk, we need to temporarily disable SIP, otherwise iBoysoft Data Recovery for Mac will be prevented from scanning.

Step 1: Disable System Integrity Protection (SIP)

1. Boot to Recovery OS by restarting Mac and pressing & holding down Command + R keys at startup.

Disble SIP step 1

2. Launch Terminal from Utilities.

3. Enter the command: csrutil disable and press Return.

Disble SIP step 2

Step 2: Recover deleted/lost files from startup disk on macOS High Sierra

iBoysoft Data Recovery for Mac is a professional Mac data recovery software that can recover lost data from startup disk on macOS High Sierra 10.13, recover deleted/lost files from APFS drive, recover lost data from unreadable APFS hard drive, recover lost data from corrupted APFS drive, recover lost data from encrypted APFS drive, recover deleted/lost APFS partition, etc.

Aside from above, iBoysoft Data Recovery for Mac also has reliable performance on data recovery from FAT32 drives, exFAT drives, HFS+ drives, recover lost data from formatted, unmountable, inaccessible, corrupted hard drive, external hard drive, USB flash drive, SD card, pen drive, etc. on macOS Catalina Big Sur 11/10.15/Mojave 10.14/High Sierra 10.13/10.12 Sierra and Mac OS X 10.11/10.10/10.9/10.8/10.7.

Tutorial to recover lost data from startup disk on macOS High Sierra with iBoysoft Data Recovery for Mac

1. To avoid overwritting the lost files, please download iBoysoft Data Recovery for Mac to an external drive, instead of your startup disk.

2. Double click iBoysoft Data Recovery for Mac installation file, then double click iBoysoft Data Recovery for Mac icon to directly run it (instead of dragging it to Applications folder).

Install iBoysoft Data Recovery

3. After launching iBoysoft Data Recovery for Mac, select the startup disk where lost the data.

Recover lost data from startup disk on macOS High Sierra

4. Click "Next" to search for all lost files on the startup disk.

5. Preview the listed recoverable files, choose those we want, and click "Recover" to get them back.

After successfully get lost files back, we can enable System Integrity Protection as steps below.

Step 3: Enable System Integrity Protection (SIP)

1. Boot to Recovery OS by restarting Mac and pressing & holding down Command + R keys at startup.

2. Launch Terminal from Utilities.

3. Enter the command: csrutil enable.

Still have questions?