To get the latest features and maintain the security, stability, compatibility, and performance of your Mac, it's important to keep your software up to date. Apple recommends that you always use the latest macOS that is compatible with your Mac.
Since the arrival of Mac OS X El Capitan way back in 2015, you can no longer repair permissions in Disk Utility. While your Mac starts up will no doubt be outweighed by the speed improvements. On your Mac, choose Apple menu Shut Down. If you don't want app windows that are open to reopen when your Mac restarts, deselect 'Reopen windows when logging back in.' A Mac is completely shut down when the screen is black. Some computers also don't show an active power light or have any fan or drive noise.
Learn how to upgrade to macOS Big Sur, the latest version of macOS.
Check compatibility
If a macOS installer can't be used on your Mac, the installer will let you know. For example, it might say that it's too old to be opened on this version of macOS, or that your Mac doesn't have enough free storage space for the installation.
To confirm compatibility before downloading, check the minimum requirements for macOS Catalina, Mojave, High Sierra, Sierra, El Capitan, or Yosemite. You can also find compatibility information on the product-ID page for MacBook Pro, MacBook Air, MacBook, iMac, Mac mini, or Mac Pro.
Make a backup
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- Check whether the external SSD is properly plugged in. Since all SSDs use SATA interface, so when.
- It is excruciatingly slow and has really no features in the app that aren't features within the watch settings. The funny part about it is, I had to reinstall Wear OS because I thought maybe that would help. But I noticed that once I had uninstalled the app, al of a sudden the watch sped up, and was functioning much more quickly.
Click Install macOS High Sierra — Quit Install macOS menu item at the virtual machine window top-left corner to quit mac os installation wizard. Then select Disk Utility in macOS Utilities window, click the Continue button. Select the virtual disk in Disk Utility left panel, then click Erase button at the top bar, it will popup a window.
Before installing, it's a good idea to back up your Mac. Time Machine makes it simple, and other backup methods are also available. Learn how to back up your Mac.
Download macOS
It takes time to download and install macOS, so make sure that you're plugged into AC power and have a reliable internet connection.
Safari uses these links to find the old installers in the App Store. After downloading from the App Store, the installer opens automatically.
- macOS Catalina 10.15 can upgrade Mojave, High Sierra, Sierra, El Capitan, Yosemite, Mavericks
- macOS Mojave 10.14 can upgrade High Sierra, Sierra, El Capitan, Yosemite, Mavericks, Mountain Lion
- macOS High Sierra 10.13 can upgrade Sierra, El Capitan, Yosemite, Mavericks, Mountain Lion
Safari downloads the following older installers as a disk image named InstallOS.dmg or InstallMacOSX.dmg. Open the disk image, then open the .pkg installer inside the disk image. It installs an app named Install [Version Name]. Open that app from your Applications folder to begin installing the operating system.
- macOS Sierra 10.12 can upgrade El Capitan, Yosemite, Mavericks, Mountain Lion, or Lion
- OS X El Capitan 10.11 can upgrade Yosemite, Mavericks, Mountain Lion, Lion, or Snow Leopard
- OS X Yosemite 10.10can upgrade Mavericks, Mountain Lion, Lion, or Snow Leopard
Install macOS
Follow the onscreen instructions in the installer. It might be easiest to begin installation in the evening so that it can complete overnight, if needed.
If the installer asks for permission to install a helper tool, enter the administrator name and password that you use to log in to your Mac, then click Add Helper.
Please allow installation to complete without putting your Mac to sleep or closing its lid. Your Mac might restart, show a progress bar, or show a blank screen several times as it installs macOS and related firmware updates.
Learn more
You might also be able to use macOS Recovery to reinstall the macOS you're using now, upgrade to the latest compatible macOS, or install the macOS that came with your Mac.
You can't access a Sandisk, Crucial, or Samsung T3 when the external SSD is not recognized or detected by Mac, whether the external SSD was working for a long time or it's a new SSD you bought recently.
However, hard drives not working or showing up issue is so prone to happen even when you unplug the external SSD from the Mac and later on plug in the SSD again. It's definitely frustrating, especially when you have important files stored on it.
How can you fix the unrecognized external SSD and access your files stored on it? You'll find the solutions to fix the unrecognized or undetected external SSD in this post.
- 1. Check the connections
- 2. Reboot your Mac computer
- 3. Check the unrecognized external SSD in Disk Utility
- 4. Repair the unrecognized external SSD with First Aid
- 5. Reformat the unrecognized external SSD without data loss
- 6. Send the external SSD to a local technician
How to avoid data loss when external SSD not recognized on Mac?
As you can't access the important files on your external SSD that not showing up, data loss may happen. To avoid such a frustrating thing occurs, you'd better recover data from your unrecognized external SSD.
Besides, formatting your external SSD is one of the solutions (always the most efficient way) to fix this issue, so, data recovery of your external SSD is very necessary. Slime mayhem 0.06 beta mac os.
If you have a backup of your external SSD, you can skip this data recovery work. If not, you need to use some data recovery software.
iBoysoft Data Recovery Software for Mac is highly recommended here to recover lost data from unrecognized external SSD. It's a free and secure data recovery tool, which can recover lost data from corrupted, formatted, unreadable, and unmountable SSD. This software works on macOS Big Sur 11/10.15/10.14/10.13/10.12 and Mac OS X 10.11/10.10/10.9/10.8/10.7.
Media player download. Moreover, iBoysoft Data Recovery for Mac supports main storage devices including hard drives, external hard drives, USB flash drives, SD cards, memory cards, etc. and multiple file formats such as documents, audios, pictures, videos, emails, etc.
Tutorial to recover lost data from unrecognized SSD on Mac with iBoysoft Data Recovery for Mac
- 1. Launch iBoysoft Data Recovery for Mac.
- 2. Select the unrecognized external SSD and click 'Next' to scan lost files on the drive.
- 3. Preview the scanning results, choose files we need, and click 'Recover' to get lost files back from the unrecognized external SSD.
- 4. Have a check to ensure we have recovered all lost files.
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How to fix external SSD not recognized on Mac?
Solution 1: Check whether the external SSD is properly plugged in
Since all SSDs use SATA interface, so when an external SSD is not recognized by Mac, the first and foremost solution is to check whether the external SSD is properly plugged in. So simply do these checks:
- Check if the cable is working by connecting the external SSD with a different cable.
- Check whether your SSD is using SATA Ⅰ, Ⅱ, or Ⅲ so that your adapter/dock/case is compatible with your external SSD.
- Try a different SATA to USB adapter and make sure it works by plugging in a different drive.
- Try to connect the external SSD directly to your Mac if it's a type C drive, rather than accessing it via a USB-C adapter.
If the unrecognized external SSD is a Samsung T5/T3 SSD, and you got the 'System Extension Blocked' and 'No Samsung Portable SSD is connected' messages when executing Samsung Portable SSD Software, simply go to System Preferences > Security & Privacy > choose Allow button next to the message: System software from developer 'Samsung Electronics' was blocked from loading.
Solution 2: Reboot your Mac computer
Sometimes, Mac externalSSD not mounting issue is caused by the system issues. But you easily fix them by restarting. The restarting process will refresh your macOS's memory and starts it up fresh, which works efficiently especially when the USB port is busy. Simply choose the Apple menu and click Restart.
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If you are interested in, you can learn what happened inside when Mac doesn't recognize an external drive with details.
Solution 3: Find the unrecognized external SSD in Disk Utility
When an external SSD is not showing up on Mac, the most necessary step is to check whether the external SSD can be found in Disk Utility. If the external SSD can be found in Disk Utility, you make sure that the drive doesn't have any hardware problems. But if you can't find it listed in Disk Utility, the external SSD might be physically damaged.
So simply Go > Disk Utility > View > Show All Devices to check the external SSD.
- If your external SSD is using Windows NTFS format, macOS won't mount the drive in writable mode. To write to an NTFS drive, you need to download a free NTFS for Mac driver.
- If you have used this external SSD on other computers for some time and now it is unrecognized by macOS, the file system of the SSD is either unsupportable or corrupted, you need to recover lost data from this external SSD and reformat the drive.
- If you newly bought this SSD and it is not initialized, you can't see the partitions of the external SSD in Disk Utility but receive an error message 'the disk you inserted was not readable by this computer'. In this case, you need to make sure you don't have any data on this drive and then initialize it in Disk Utility by erasing.
Solution 4: Repair the unrecognized external SSD with First Aid
If your external SSD shows up in Disk Utility but not mounted, you can right-click the drive and select Mount menu and then the SSD will show up on Mac. If the Mount button is grayed out or you fail to mount the external SSD, try running First Aid to verify and repair disk errors.
- 1. Launch Disk Utility.
- 2. Choose the grayed out external SSD from the left sidebar.
- 3. Select the 'First Aid' tab on the top.
Solution 5: Reformat the unrecognized external SSD without data loss
If all solutions above don't work, the external SSD might be corrupted and you need to reformat it. Whether the external SSD is not recognized due to logical disk errors or hardware problems, the most important is your files on the drive.
The thing is, reformatting will cause data loss. So, to prevent data loss, you need to get your files off this external SSD first if you forget to back up. iBoysoft Data Recovery for Mac will help you get your data back within a few clicks.
Evette schaeffer serial numbers saxophones. After your important data is recovered, you can go ahead to fix this issue by reformatting without data loss.
Tutorial to reformat the unrecognized external SSD
This guide to reformat external SSD will remove all data on the external SSD, please make sure you have recovered all useful files with iBoysoft Data Recovery.
- 1. Launch Disk Utility.
- 2. Select the external SSD on the left part of the window.
- 3. Click 'Erase' on the top of the Disk Utility window.
- 4. Complete related information (name, format, scheme), then click Erase.
Solution 6: Send the external SSD to a local technician for help
If unfortunately, the external SSD can't show up in Disk Utility or the solutions above failed to fix external SSD not recognized issue, the drive might have some hardware problems. You need to contact the manufacturer for technical support or product replacement.
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Why is external SSD not recognized on Mac?
Various reasons are leading to external SSD not showing up issue on Mac. Here we conclude four main causes as below:
1. The SATA to USB 3.0 adapter/Dock is malfunctioned.
Usually, you need to buy an additional dock, disk case, or SATA adapter to access an SSD drive. During this process, if the externally connected SSD is not recognized by your Mac, it's likely that the adapter is not compatible with the disk's SATA interface, or the dock/drive caddy is faulty. The secret of the sacred seasons mac os.
2. The external SSD is new and uninitialized.
This happens when users externally connect the SSD to backup or transfer files on the internal hard drive. But many newly bought SSDs are not initialized with a file system, which means there is no entrance for macOS to recognize and communicate with this SSD, and for sure, the external SSD won't show up.
3. The external SSD has a file system that can't be recognized by Mac.
Possibly, the SSD that you try to access is formatted with a file system. However, it's not a file system that your Mac can recognize. For example, it is formatted with a Linux file system. In this case, your macOS can't recognize the external SSD surely.
4. New software or firmware needs to be updated.
This happens frequently for Samsung portable SSD T5/T3, because you need to install Samsung portable SSD Software to unlock disk's password and update certain firmware for this SSD. And if the necessary software and extension are not downloaded, you may receive 'No Samsung portable SSD is connected' from its software.
5. The external SSD is not set to show up on Mac.
Sometimes, your external SSD actually is recognized by the Mac, but some setups stop the SSD from showing up in the Finder, on the desktop, or even in the Disk Utility.
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6. The external SSD is corrupted.
Nanas pettin emporium mac os. Another possible cause is that you have unsafely ejected your SSD, which makes the external drive corrupted after some core data like partition table or file system is damaged. Also, you need to be clear that the life span of an SSD is limited depending on how frequently you use it.
7. Other Hardware problems.
Some SSD support pages you may need:
- Samsung: https://www.samsung.com/semiconductor/minisite/ssd/support/warranty/
- Crucial: https://uk.crucial.com/gbr/en/support?cm_re=top-nav-v2-_-flyout-support-_-support-home
- Intel:https://supporttickets.intel.com/?lang=en-US
- WD: https://www.westerndigital.com/support
- Kingston: https://www.kingston.com/en/company/warranty
- Toshiba: https://www.toshiba-memory.com/warranty/