Oct 18, 2019 When you connect an external drive directly to your Mac, you might be asked if you want to use the drive to back up with Time Machine. Select Encrypt Backup Disk (recommended), then click Use as Backup Disk. An encrypted backup is accessible only to users with the password. Learn more about keeping your backup disk secure. May 01, 2010 2. After DU loads select your hard drive (this is the entry with the mfgr.' S ID and size) from the left side list. Click on the Partition tab in the DU main window. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Set the format type to Mac OS. Jan 25, 2019 WD - easystore® External Portable Hard Drive Manual for MacBook Pro, iMac, Mac mini, Mac Pro, MacBook Air, and others. Setup time machine and setup to work in Windows Pc and Mac. Your new Mac: This is the best way to set up your Apple computer. Setting up a new iMac or MacBook Air takes time, but we'll walk you through what you need, and offer some advice along the way to.
If you read my previous post about how to format an external drive for Mac, you know that I bought a 2TB Seagate Expansion external hard drive and managed to create two partitions on the disk — one for Mac backup purposes, and the other for personal use.
In this article, I’m going to show you how to back up your Mac data to an external drive. You should back up your Mac on a regular basis, especially if you’re planning to perform macOS updates.
I did this several weeks ago while preparing my MacBook Pro for a system update. You may also be interested in taking a look at the macOS Catalina slow issues we encountered during that process just in case you also want to upgrade your Mac to the latest operating system.
Please note that the backup tool that I used is Time Machine, a built-in app provided by Apple. If you want to back up your Mac data without using Time Machine, there are also other third-party Mac backup software worth considering.
Where is Time Machine on Mac?
Time Machine is a built-in app within macOS ever since OS X 10.5. To find it, click on the Apple logo on the top left corner of your screen, then select System Preferences.
In the Preferences Pane, you’ll see the app located between “Date & Time” and “Accessibility”.
What does Time Machine Backup?![]()
Time Machine is the easiest way to back up Mac. And the app is created and recommended by Apple. Once you have a timely backup, it’s incredibly easy to restore all or part of your data in case of accidental deletion or a hard drive crash.
So, what kind of data does Time Machine backup? Everything!
Photos, videos, documents, applications, system files, accounts, preferences, messages, you name it. They all can be backed up by Time Machine. You can then restore your data from a Time Machine snapshot. To do so, first open Finder, then Applications, and click on Time Machine to continue.
Be aware that the recovery process can be only be conducted when your Mac can start up normally.
A Step-by-Step Guide to Backing up Mac to an External Hard Drive
Note: the screenshots below are taken based on an older macOS. If your Mac is running Mojave or Catalina, they will look slightly different but the process should be similar.
Step 1: Connect your external hard drive.
First, use the USB cable (or USB-C cable if you’re on the newest Mac model with Thunderbolt 3 ports) that comes with your external drive to connect that drive to your Mac.
Once the disk icon shows up on your desktop (if it doesn’t, open Finder > Preferences > General, and here make sure you’ve checked “External disks” to let them show on the desktop), move on to Step 2.
Note: if your external drive can’t show up on Mac or macOS hints the drive is not supported, you’ll have to re-format it to a Mac-compatible file system before continuing the following steps.
Step 2: Select the disk for backup.
Now open Time Machine (I tell you how above) and select the disk you want to use. I have partitioned my Seagate drive into two new volumes, “Backup” and “Personal Use”, as you see from the screenshot. I chose “Backup”.
Step 3: Confirm backup (optional).
If you have used another disk for backup before, Time Machine will ask you whether you want to stop backing up to the previous disk and use the new one instead. It’s up to you. I selected “Replace”.
Step 4: Wait until the process is complete.
Now Time Machine will start to backup all your data. The progress bar gives you an estimate of how much time is left before the backup is complete. I found it a bit inaccurate: Initially, it said “About 5 hours remaining”, but it only took two hours to finish. It’s worth noting that the remaining time may vary from case to case depending on the write speed of your external hard drive.
After about an hour and a half, it says only 15 minutes remaining
Step 5: Eject your external drive and unplug it.![]()
When the backup procedure is completed, don’t rush to disconnect your device as this could cause potential disk problems. Instead, go back to the main desktop, locate the volume that your external hard drive represents, right-click and select Eject. Then, you can safely unplug the device and put it in a safe place.
Final Words
Like any other hardware device, an external hard drive will fail sooner or later. It’s best to make a copy of the data on your external drive — as they say, a “backup of your backups”!
One good option is to use cloud storage services like iDrive which I’ve been using and I really like the app because it’s super easy to use, and it also allows me to download Facebook photos automatically. Backblaze and Carbonite are also popular options in the market, though I am yet to give them a try.
I hope you find this tutorial helpful. I can’t emphasize enough the importance of data backup these days, especially when my mid-2012 MacBook hard drive died all of a sudden. I’ve also seen cases where my friend’s computer and hard drive failed. You can imagine their desperation. Without a proper backup, it’s really hard to restore data. Although you could try a third-party data recovery program, chances are they won’t get all your lost data back.
Anyway, the main takeaway I want you to have from this article is this: back up your Mac with Time Machine or another app, and create a second or third copy of those backups if you can.
Apple's photo management software for the Mac, Photos, has grown to be a fairly competent all-purpose storage locker. But as your photo and video library grows — and especially if you've taken advantage of iCloud Photo Library — you may find that your Photos library strains to fit on your Mac's hard drive.
While there are options to keep your Mac from running out of space, like optimizing your photo storage if you use iCloud Photo Library, it comes at a cost: Without a fully-stored Photos library, you won't be able to create secondary backups of your images and video. (And as good as iCloud has become, your photos and video are precious enough that they're worth keeping backed up in multiple places.)
There is an alternative: Moving your Photos library to an external drive (or creating an entirely separate library and syncing it with iCloud). Here's how to do it, and some reasons why you should — and shouldn't! — consider it for your needs.
Why you should (and shouldn't) use an external drive with Photos for Mac
There are a number of reasons why an external drive might make sense when you're working with Photos for Mac:
That said, there are some downsides, too. Here are some reasons you might not want to use an external drive:
Best external drives for storing photos
Okay, so you've decided to move your Photos library over to an external drive. What next? If you already have an external drive, you can always use it for storing your Photos library (and save on cash). But if you're considering getting a new drive for this endeavor, here's what I suggest:
Want some recommendations for specific external hard drives? We've got those, too.
How to move your current Photos library to an external drive and use it as your primary library
As with creating a new library, moving your library to your external drive is a multi-step process. Here's how to go about it.
Step 1: Copy over your Photos library
Your library will begin to copy over to your external drive. Depending on the size of your library and speed of your drive, this can take anywhere from a few minutes to several hours, so be patient. Don't unplug your drive or turn off your computer during this process.
Step 2 (if you use iCloud): Turn off iCloud sync on your old library
Before you open your copied Photos library on the external drive, you have to disassociate the library on your Mac from iCloud. (If you don't use iCloud Photo Library, you can skip these steps.)
Step 3: Make your new library your system default
Now, it's time to make your newly-copied Photos library your system default.
Step 4 (if you use iCloud): Connect your new library to iCloudSet Up New Hard Drive Mac
Your external library is now set up to be your system default, but it's not currently connected to iCloud. If you use iCloud Photo Library and want to keep that connection active so that you can continually download items you've stored, read on. (Otherwise, you can skip this step.)
Once your library has fully synced and downloaded images, you can disconnect your drive; whenever you want to use your Photos library, you now need to connect your drive to your Mac.
Step 5: Get rid of your old library
A personal plea: Please, please, please make sure your library is fully copied and working on your external drive before you follow the steps below — once you've thrown away your original library, it's gone!
Now you have a direct link to your copied Photos library from the Pictures folder: This prevents your computer from accidentally creating multiple Photos libraries in case you forget to launch Photos with your external drive connected.
Note: If you're worried about accidentally creating libraries, you can always launch Photos by option-clicking on its icon in the Dock or Applications folder; this will give you the option of picking which library you'd like to launch.
How to create a new Photos library on your external drive and use it as your primary library
Creating a new library on your external drive is a multi-step process. Here's how to go about it.
Step 1 (if you use iCloud): Turn off iCloud sync on your old library
Before you create a new Photos library, you have to disassociate your current library as your system default. (If you don't use iCloud Photo Library, you can skip these steps.)
Step 2: Create your new Photos library
Once you've done this, it's time to create a new library.
Step 3: Make your new library your system default
You'll now have an empty library on your external drive. Next up: Making it your system library.
Step 4 (if you use iCloud): Connect your new library to iCloud
Your external library has now been set up from scratch. If you use iCloud Photo Library and want to download all the items you've stored there to have an external backup, read on. (Otherwise, you can skip this step.)
Once your library has fully synced and downloaded images, you can disconnect your drive; whenever you want to use your Photos library, you now need to connect your drive to your Mac.
Step 5: Get rid of your old library
A personal plea: Please, please, please make sure your new library is live and working on your external drive before you follow the steps below — once you've thrown away your original library, it's gone!
Now you have a direct link to your Photos library from the Pictures folder: This prevents your computer from accidentally creating multiple Photos libraries in case you forget to launch Photos with your external drive connected.
Set Up New Os On External Hard Drive Mac 2019 Download
Note: If you're worried about accidentally creating libraries, you can always launch Photos by option-clicking on its icon in the Dock or Applications folder; this will give you the option of picking which library you'd like to launch.
Questions?
Let us know in the comments.
Updated March 2019: Updated for macOS Mojave.
Serenity Caldwell contributed to an earlier version of this post.
iCloud Photo Library: The Ultimate GuideMainBacking up: The ultimate guideMain
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The Association of Public Health Laboratories has announced it is working with Apple, Google, and Microsoft to launch a national server that will securely store COVID-19 exposure notification data.
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