Dec 12, 2017 Here are steps to retrieve files from external hard drive with Stellar Phoenix Mac Data Recovery: Step 1. Install Stellar Phoenix Mac Data Recovery on your Mac and plug in your drive. Open the software and select file types to recover. Then click Next to continue. Nov 14, 2019 You can also mount cloud storage as local drive on your Mac. By connecting Google Drive, Dropbox, or Amazon to your computer, you get more space for securely accessing and sharing files. For your ease, add cloud drives to Finder with CloudMounter app, so that you keep them close at. May 13, 2013 You can mount and unmount drives, volumes, and disks from the command line of MacOS and Mac OS X. For many users, the easiest way to unmount a drive in Mac is to either just drag a volume into the Trash, use the eject keys, disconnect the drive, or use one of the force eject methods.
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Reinstall from macOS Recovery
macOS Recovery makes it easy to reinstall the Mac operating system, even if you need to erase your startup disk first. All you need is a connection to the Internet. If a wireless network is available, you can choose it from the Wi-Fi menu , which is also available in macOS Recovery.
1. Start up from macOS Recovery
To start up from macOS Recovery, turn on your Mac and immediately press and hold one of the following sets of keys on your keyboard. Release the keys when you see an Apple logo, spinning globe or other startup screen.
Command (⌘)-R
Reinstall the latest macOS that was installed on your Mac (recommended).
Option-⌘-R
Upgrade to the latest macOS that is compatible with your Mac.
Shift-Option-⌘-R
Reinstall the macOS that came with your Mac, or the closest version still available.
You might be prompted to enter a password, such as a firmware password or the password of a user who is an administrator of this Mac. Enter the requested password to continue.
When you see the utilities window, you have started up from macOS Recovery.
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2. Decide whether to erase (format) your disk
You probably don't need to erase, unless you're selling, trading in or giving away your Mac, or you have an issue that requires you to erase. If you need to erase before installing macOS, select Disk Utility from the Utilities window, then click Continue. Learn more about when and how to erase.
3. Install macOS
When you're ready to reinstall macOS, choose Reinstall macOS from the Utilities window. Then click Continue and follow the onscreen instructions. You will be asked to choose a disk on which to install.
- If the installer asks to unlock your disk, enter the password you use to log in to your Mac.
- If the installer doesn't see your disk, or it says that it can't install on your computer or volume, you might need to erase your disk first.
- If the installer is for a different version of macOS than you expected, learn about macOS Recovery exceptions.
- If the installer offers you the choice between installing on Macintosh HD or Macintosh HD - Data, choose Macintosh HD.
Please allow installation to complete without putting your Mac to sleep or closing its lid. During installation, your Mac might restart and show a progress bar several times, and the screen might be empty for minutes at a time.
If your Mac restarts to a setup assistant, but you're selling, trading in or giving away your Mac, press Command-Q to quit the assistant without completing setup. Then click Shut Down. When the new owner starts up the Mac, they can use their own information to complete setup.
macOS Recovery exceptions
The version of macOS offered by macOS Recovery might vary in some cases:
- If macOS Sierra 10.12.4 or later has never been installed on this Mac, Option-Command-R installs the macOS that came with your Mac, or the closest version still available. And Shift-Option-Command-R isn't available.
- If you erased your entire disk instead of just the startup volume on that disk, macOS Recovery might offer only the macOS that came with your Mac, or the closest version still available. You can upgrade to a later version afterward.
- If your Mac has the Apple T2 Security Chip and you never installed a macOS update, Option-Command-R installs the latest macOS that was installed on your Mac.
- If you just had your Mac logic board replaced during a repair, macOS Recovery might offer only the latest macOS that is compatible with your Mac.
If you can't get macOS Recovery to offer the installer you want, you might be able to use one of the other ways to install macOS.
Other ways to install macOS
- You can also install macOS from the App Store or Software Update preferences. If you can't install macOS Catalina, you might be able to install an earlier macOS, such as macOS Mojave, High Sierra, Sierra, El Capitan, or Yosemite.
- Or create a bootable installer disk, then use that disk to install macOS on your Mac or another Mac.
Summary
If your external hard drive or hard drive is not recognized or detected, keep calm. EaseUS hard drive data recovery software can help you easily recover hard disk data when it is not detected or recognized. Try it to solve external hard drive not recognized problem without data loss.
OverviewWhen and why the external hard drive is not recognized
An external hard drive is definitely helpful for data backup or data transfer. But sometimes it also brings trouble when it is not recognized or detected by the computer. This usually happens with some error messages like:
- 'The drive is not formatted'
- 'The drive cannot be accessed'
- 'RAW drive is not initialized' etc.
When the drive is corrupted due to improper usage or simply because the disk has been used for too many times, how to fix this error? Usually, there are three major reasons that Windows cannot recognize your hard drive:
- A hardware issue with your computer's USB port
- A driver problem with your Windows computer
- The drive becomes dead
![Recovery Recovery](/uploads/1/2/6/6/126646257/793239909.png)
So, first, connect your external hard drive to another computer and test if it is the USB port problem. If it works on another computer, you should fix the USB port. Otherwise, you need to try the following methods to fix external drive not recognized issues and retrieve data.
- Important
- If your hard drive cannot be detected in Disk Management or My computer, EaseUS data recovery software won't work. Make sure you have solved the Not Detected Problem before doing data recovery.
Case 1HDD is not showing or detected in My Computer or Disk management
Sometimes, the external hard drive doesn't appear in your Computer window but list in the Disk Management window because it doesn't contain any partitions.
So, first press 'Windows Key + R', type diskmgmt.msc into the Run dialog and press 'Enter' to check if the drive shows up in Disk Management.
① If you do see the drive here, you can first perform external hard drive recovery to restore data from the disk by using EaseUS data recovery software and then format it properly. So Windows or your other devices can access and recognize it.
② If the drive doesn't show up in Disk Management after you've tried another computer, you may try the Device Manager. To do it, you need to press 'Windows Key + R', type devmgmt.msc into the Run dialog, and press 'Enter'.
Look under Disk drives and check for any devices with a yellow exclamation mark next to them. If there was a yellow mark, it can be sure the drive has a driver problem. Right-click the device and select 'Properties', and look at the error message. This error message can help you fix the problem.
Case 2Hard drive becomes RAW and is inaccessible
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First, DO NOT do as Windows requires. If you did so, all data in the drive would be lost. You should take immediate action to get those important data out from the inaccessible hard drive and then format it. A disk data recovery tool will be a good helper to recover data from the RAW drive. EaseUS Data Recovery Wizard is the best tool to make hard disk recovery and recover data from any data loss situations. It can help you get lost data back with simple clicks.
Step 1. Locate and scan the RAW hard drive.
On EaseUS Data Recovery Wizard, locate the RAW drive and then click 'Scan'. The program will automatically scan all lost files and data on the RAW drive.
Step 2. Find and preview found data in the RAW drive.
When the scanning process finishes, find lost RAW drive data in 'Deleted Files', 'Lost Files' or 'Existing Files'. Filter and Search features also can locate the found files with ease. Check and double-click each file to preview them.
Step 3. Restore and save RAW drive data.
Choose the found files from RAW Drive and click 'Recover'to save the items to a new location.
After data recovery, you can format the RAW external hard drive to the proper file system to make it detected.
- Step 1: Connect the external hard drive to PC > Right-click on This PC > Manage > Disk Management.
- Step 2: Find and right-click on the external hard drive > Select Format volume...
- Step 3: Reset the external hard drive letter and system file (NTFS) and save all changes.
After this, reboot your PC and reconnect the external hard drive to the PC. You should be able to reuse it.
Case 3There is something wrong with your device driver
If your external hard drive still cannot be recognized, you can update the driver to fix it. o update hard drive drivers for your computer storage controller follow the steps below.
- Step 1: Click the Start button > Type: Device Manager and hit Enter.
- Step 2: Select Device Manager, expand categories to find the name of your hard drive and right-click it.
- Step 3: Select Update Driver > Select Search automatically for updated driver software.
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If Windows doesn't find a new driver for your drive, try to find the latest one on the device manufacturer's website.
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Case 4The HDD is not detected because it's dead
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The dead hard drive eventually affects all computer users. But you can still fix it.
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- Step 1: If it is recognized as Online Disk and the partition or disk space is displayed properly. Then you can recover data from it using EaseUS Data Recovery Wizard WinPE Edition.
- Step 2: If your dead HDD or external hard drive is not showing as 'Online', you can still fix it by following this guide: How to Recover Data from a Dead Hard Drive. It provides you with tried and true solutions to fix a dead HDD.