Erase Hard Drive In Mac Utility Can Reinstall Os

Erase Hard Drive In Mac Utility Can Reinstall Os

Securely erase your hard drive with Disk Utility. Before Lion, you had to boot from a CD or DVD system disk or a third-party utility, like Disk Warrior, or from an external drive with OS X installed. Jun 20, 2019  The part with the spinning globe went from about 12 minutes to about 3, I then had to partition the hard drive (journaling enabled as it will tell you when you first try to load the OS - so you may have to back track to the disk utility), then the reinstall OS works slick as can be. Quit out of the Disk Utility app, and this time choose Reinstall OS X and Continue.Follow the instructions that appear on screen, license agreements and all, and choose the hard drive to use (in.

Erase Your Hard Drive And Reinstall Macos

Question submitted by a reader of the blog:

Installing mac os x snow leopard from external hard drive mac. This guide will show you how to install macOS High Sierra onto a blank hard drive.Note: This guide is untested for macOS Catalina, and will probably not work without adjustments.Before you begin, you will need to create a bootable flash drive. This requires having access to a Mac currently running High Sierra, in order to download the 7.7 GB High Sierra file in the App Store. If you have recently upgraded or replaced the hard drive for your MacBook or iMac, you will need to reinstall macOS onto it. You will also need an empty flash drive that can fit 5.4 GB.before proceeding with the guide.

Hello Tysa, I have an old Mac machine which runs extremely slow. I’ve just ordered a new Mac from the Apple Store. Now I want to sell my old Mac on eBay. I read that one of the best practices is to erase the hard drive so no one can retrieve any data from it. The thing is how to do this without the system restore CD?

Here’s my reply:

For modern Mac machines, you don’t need to rely on the original system disc to wipe a Mac clean. Plus, Macs shipped after OS X Lion don’t come with CDs any more (see this MacWorld news). So, there is no way you can get one unless your Mac really shows its age.

That said, you can quickly erase your old Mac hard drive with OS X’s Recovery feature, which is built into Apple’s Disk Utility. See this screenshot on my Mac. There is an “Erase” option. Note: it’s grayed out because I can’t erase the main hard drive when I turn on my Mac. You’ll have to shut down your Mac and use the trick below to access Disk Utility without booting the disk.

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How to access Disk Utility on startup?

All you have to do is shut down your Mac, press the Start button, and hold Command + R keys (or Option key, depending on the OS X your Mac is with). It’ll come to a screen called “OS X Utilities”, there you’ll find Disk Utility, click it and erase your Mac securely.

This YouTube video made by Shani Jaf nails it step by step

In case you find the above method too complicated or it doesn’t work, another way is to use third-party software.

Reminder: using the above methods will permanently remove all data saved on the hard drive, use with caution. Before you proceed, make sure you’ve already backed up all important data to an external hard drive or cloud storage.

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Summary

macOS Recovery can help you easily reinstall the Mac operating system on your built-in drive or an external drive. Dell c1765nf mac os driver. This blog answers 'Does reinstalling macOS delete files?' Besides, it also suggests using EaseUS Data Recovery Wizard for Mac to recover lost and deleted files in the easiest and safest way.

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 SolutionsStep-by-step Troubleshooting
Phrase 1. Create Bootable USBRun EaseUS Mac data recovery software on another Mac computer > Create bootable USB..Full steps
Phrase 2. Recover Mac DataConnect bootable USB to failed Mac > Boot computer from USB > recover data..Full steps

'My macOS Catalina got corrupted, and the login screen doesn't appear. If I reinstall macOS from 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.'

Erase hard drive in mac utility can reinstall os download

Reinstalling macOS of macOS Recovery can help you replace the current problematic OS with a clean version quickly and easily. Technically speaking, simple 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

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. In the scan results, select the file(s) and click 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.

Erase Hard Drive And Install Os X

See More about EaseUS Data Recovery Wizard for Mac

Wipe Mac Os And Reinstall

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.