From the utilities window in macOS Recovery, select Disk Utility and click Continue. Select your disk in Disk Utility Choose View Show All Devices (if available) from the menu bar or toolbar in Disk Utility. The sidebar in Disk Utility should now show each available disk or other storage device, beginning with your startup disk. When the Recovery Mode Utilities window shows up, pick Disk Utility and click Continue. Select your main hard drive usually called Macintosh HD. Click the Erase button on top ribbon of Disk Utility to start erasing your hard drive for factory reset MacBook Pro. When it is done, close the application by clicking Disk Utility and then Quit Disk. Mar 01, 2014 Try using Disk Utility/Restore to copy the data to a new location. Please note that this will reformat the destination partition. Boot to the Recovery Volume (command - R on a restart or hold down the option/alt key during a restart and select Recovery Volume). Run Disk Utility Verify/Repair Disk and Repair Permissions until you get no errors. Mar 04, 2018 When I do the Command + R+Power for recovery mode I get a spinning globe and a clock. When I do the Command + Option+Command +R I get the Recovery screen and I try to reinstall Mac OS but It doesn't show a disk, to install to. I have no idea what I'm doing. And so angry at myself for what I did. One thought I had was. If you have issues with your computer or if you started your computer and saw the macOS Recovery window, you may need to repair your computer's internal disk. In the Recovery app window, select Disk Utility, then click Continue. In the Disk Utility app, select your disk in the list on the left.
This page illustrates the detailed process of recovering data from a failed Mac computer before you reinstalling the macOS. If you are having the same issue, follow through this page to see how to get data out of the failed Mac computer before macOS reinstallation:
| Workable Solutions | Step-by-step Troubleshooting |
|---|---|
| Phrase 1. Create Bootable USB | Run EaseUS Mac data recovery software on another Mac computer > Create bootable USB..Full steps |
| Phrase 2. Recover Mac Data | Connect bootable USB to failed Mac > Boot computer from USB > recover data..Full steps |
macOS Reinstallation Deletes Everything, What Can I Do
Restore Mac Using Disk Utility
'My macOS Catalina got corrupted, and the login screen doesn't appear. If I reinstall macOS from the recovery menu will my previously installed software and data be deleted? And if so how can I back them up on a hard drive, the data and the software are very important to me.'
Mac spirit vs whirl. Reinstalling macOS of macOS Recovery can help you replace the current problematic OS with a clean version quickly and easily. Technically speaking, simply reinstalling macOS won't erase your disk either delete files. You probably don't need to erase, unless you're selling or giving away your Mac or having an issue that requires you to wipe. Besides, If you suspect there's something wrong with your startup drive, you can use the Disk Utility to scan and repair them from the recovery screen, which might be a quicker and more convenient alternative than erasing and reinstalling your macOS.
How to Recover Data When Mac Needs to Be Erased and Reinstall macOS
If you're encountering the same issue as said at the beginning of the article, that your computer gets corrupted, and you have to consider a complete restart in Recovery Mode. At this time, you need to use the Disk Utility in macOS Recovery to erase your Mac hard drive first, and go on to reinstall the macOS.
As well all know, erasing the hard disk on Mac will inevitably cause data loss and make the files unrecoverable. How to recover data in the easiest way when Mac failed to start? Don't worry, here comes the EaseUS Mac data recovery software, which enables you to create a bootable USB drive on another Mac that works well, then, restart your Mac from it, and go ahead to recover files. Especially to restore data on system drive under macOS 10.13, it's very safe to recover from bootable media. Useful for any emergency, no secondary data damage!
Now, follow the step-by-step guides below to see how to recover data from Mac that fail to start and need to erase and reinstall OS. The whole tutorials will be divided into two parts: how to create a USB bootable media and how to recover data from bootable media.
How to Create a USB Bootable Media
Step 1. Install and run EaseUS Data Recovery Wizard for Mac on another Mac computer, select 'File' > 'Create Bootable USB'. Then, choose a USB drive to create the bootable disc.
- Warning
- The creator will prompt to erase the drive to reallocate the space, then it can write the bootable files to this drive. Please back up all USB files with EaseUS Todo Backup for Mac before processing 'Eraser'.
Step 2. The program starts to create a 2GB space and save the boot files. The rest space on the USB can be still used for storage.
Step 3. Once it completes, please follow the guide to boot the corrupted Mac from the bootable disc and start the recovery. We suggest you restore the data to an external hard drive.
How to Recover Data from Mac Hard Disk
Mac Os Disk Utility Restore
Step 1. Select the disk location (it can be an internal HDD/SSD or a removable storage device) where you lost data and files. Click the 'Scan' button.
Step 2. EaseUS Data Recovery Wizard for Mac will immediately scan your selected disk volume and display the scanning results on the left pane.
Step 3. Safari latest version number for mac. In the scan results, select the file(s) and click the 'Recover Now' button to have them back.
After the data recovery, you can use the 'Disk Utility' to erase your Mac disk, and then choose 'Reinstall macOS' to finish the reinstalling.
How to Recover Data from Mac Hard Disk
Mac Os Disk Utility Restore
Step 1. Select the disk location (it can be an internal HDD/SSD or a removable storage device) where you lost data and files. Click the 'Scan' button.
Step 2. EaseUS Data Recovery Wizard for Mac will immediately scan your selected disk volume and display the scanning results on the left pane.
Step 3. Safari latest version number for mac. In the scan results, select the file(s) and click the 'Recover Now' button to have them back.
After the data recovery, you can use the 'Disk Utility' to erase your Mac disk, and then choose 'Reinstall macOS' to finish the reinstalling.
See More about EaseUS Data Recovery Wizard for Mac
EaseUS Mac data recovery program allows you to recover deleted files from the emptied trash bin, internal/external hard drive, SSD, corrupted or formatted memory card, including memory sticks, SD cards, CF cards, XD & MMC cards. Besides, it also enables you to recover lost Word, Excel, PPT, etc.
