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- Mar 31, 2020 If you buy a new external hard drive, you may notice that working between Mac and PC is an often difficult - but it doesn't need to be. We'll show you everything you need to know about the.
- Reconnect your external hard drive to your Mac and ensure that it fits the USB port snugly. Connect the external hard drive to a different USB port or a different Mac. If you are not sure if there is a problem with the USB port/hub, you can plug a working external drive in to a port/on a hub, unmount and eject it.
by Jenefey AaronUpdated on 2020-01-10 / Update for OS X
Apr 30, 2020 Step 1 Connect the external hard drive you want to format to your Mac, then start the Disk Utility app that you can find under Applications - Utilities. Step 2 On the left side of the Utilities screen, find the name of the external hard drive you want to format and select it.
You may need to boot up your Mac using an external drive or boot volume once in a while, rather than using a start up disk. Booting with an external disk has a lot of significance. Maybe you want to troubleshoot some problems, repair the disk, do partitions, format the entire disk, update, and install OS X etc. All these are executed perfectly when you use an external boot volume to boot up your Mac. In this article, we are here with the detailed step by step guide on how to boot Mac from external hard drive easily. So, let's get started…
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Part 1: How to Boot Mac from USB Drive/CD/DVD
Actually, it is possible to boot Mac from external drive or a hard drive, but there are a few specific requirements needed for your Mac to become eligible for that process.
- First, you have to have an Intel-Based Mac.
- Second, the CD or DVD you are using to boot must contain Apple’s Super Drive or if you are using a USB drive then it should be formatted with GUID Partition, and you are also required to install OS X installer. Apple is against booting Mac from an external storage device, because you may install an older version of OS X than the one you were using.
External Hard Drive For Mac Os X 10.8.5
Boot from CD or DVD:
If you want to boot your MacBook/Air/Pro/iMac from an optical media like CD or DVD you need to follow the steps below:
1. Open your Mac or restart the device if you were already using it.
2. When the startup music is playing press and hold the “C” key from the keyboard.
3. This will start the OS X installer from the CD/DVD on your Mac.
So, it is not too complicated to Mac boot from CD/DVD. You can easily burn a bootable image of OS X on a DVD by using Disk Utility.
Boot from External USB:
Using your USB drive to boot Mac is not as simple as you think. You need to prepare your USB drive beforehand for this specific purpose. You have to format the USB drive and insert the proper Operating System, which is OS X.
1. Turn on your Mac.
2. As soon as the startup music begins you need to press and keep holding the 'Option' key.
3. After that release that key, the Startup manager will be launched.
4. Startup Manager will begin scanning your device and you will be provided with a list of devices that are connected to your Mac.
External Hard Drive For Mac Os X 10.6.8
5. Now, select the drive you want to use with your mouse.
6. Finally, press 'Return' key on the selected option to boot Mac.
This way you can boot your Mac with an external USB drive, but the most critical part is to prepare the USB drive. If you have multiple USB drives connected, then the Startup Manager shall list the drives with the bootable OS. So, this is how to boot Mac from USB drive.
Part 2: Common Problems and Fixes When Boot Mac from External Drive
You may face several issues during MacBook Pro Boot from USB or any external drive. So, a few FAQs are mentioned below which may help you when you are facing any difficulties.
- 1. Have you tried connecting to a different USB port?
- 2. Have you formatted the USB drive with GUID partition?
- 3. Is your Mac shutting down after connecting the disk?
- 4. Is your Disk needs repair?
- 5. Have you connected the USB drive properly?
If you are unable to startup the installer after connecting the USB drive to your Mac, then first you should try connecting it to a different USB port. It may fix the problem.
If you are having problems with your USB storage device then you need to make sure that if you have properly formatted the drive with GUID partition. You have to do it properly otherwise the Intel-Based Mac won't start.
Actually, the MacBook contains a preventive measure and because of that computer shuts down automatically when a damaged USB drive is connected or if the USB port itself is damaged.
If your Mac fails to boot from an external drive even though you have properly installed the OS X installer, then maybe your disk is damaged. You should open Disk Utility and ask permission to repair disk.
There are two types of Apple keyboards, Wired and Wireless. There are also some keyboards with inbuilt USB ports but they may not have enough power to run the drive.
So, this is how to startup Mac from external drive. Follow the frequently asked questions to clear any doubts that you have while booting from external hard drive Mac.
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Partitioning your hard drive can be a frustrating and daunting task. However, once you understand how the process works, it’s a lot less scary. So why would you want to partition a drive?
Back when I was in college, like many other students, I had a MacBook Pro for ease of use and its minimalist aesthetic. I didn’t think about the fact that some applications that I needed for school were not compatible on Mac. That is when I thought about partitioning my drive so that I could run Windows on Mac.
In addition, I had an external hard drive that I also wanted to be able to use with both OS X and Windows. In this article, I’ll walk you through the steps for partitioning internal and external hard drives on a Mac.
Before you start, you should make sure to backup your entire Mac computer using Time Machine. Even if you don’t mess anything up, the chances are good that the OS will screw up and break your system.
Partition External Drive
If you have a large external hard drive, you can easily partition it so that the entire drive gets utilized. I was using a 1.5 TB external drive with my Mac, but never really used more than 1/4 of the space.
Instead, here’s how I ended up partitioning my drive, which ended up making it much more useful:
- 33%: Mac (Extra Storage) – 500GB
- 33%: Mac (Time Machine Backup) – 500GB
- 33%: Windows (Extra Storage and Backup can go on same partition) – 500GB
As you can see, each partition can have its own file format. If you have an even larger drive, you can create even more partitions for other operating systems like Linux, etc.
To partition the drive, go to Spotlight at the top of your MacBook Screen (Notification Bar) and type in Disk Utility.
On the left hand side, navigate to the tab that says EXTERNAL.
Yours will look a little bit different than mine. Under the External heading on the left hand side, you should have one hard drive instead of 3 (I have already partitioned mine). Navigate to that external hard drive and partition it according to your needs.
NOTE: If your external hard drive is not formatted for the Mac operating system, you may first need to Initialize it and then Erase it. It’s very easy:
- Under the external tab on the left side, select the drive you want to use.
- Then select the Erase option at the top
- Once there, give it a name and format it to Mac OS Extended (Journaled)
- For the Scheme, you can pick from GUID, MBR or Apple. If you’re only using the drive for storage, then it doesn’t really matter which one you pick. However, if you plan to boot from the drive, you should pick MBR for Windows and Linux and GUID for OS X. If you plan to use the drive for Boot Camp, you should also pick GUID.
Note that you can also click on Security Options Handbrake for mac os x 10.5 8. and choose from different levels of security. By default, OS X will use the fastest method, which not does securely erase the drive. If you move the slider to Most Secure, it will meet the DOD standard for erasing data by overwriting the data 7 times. This will prevent anyone or any software from recovering any previously written data from the drive.
OS X may ask you if you want to use the drive for Time Machine backups, but you should choose Decide Later unless you want to use the entire drive for the backups. Now you’re ready to partition the external drive!
Go to the top where it has the options: First Aid, Partition, Erase, Restore, Mount, etc. Select Partition and create the partitions based on your specific needs. In my case, I chose a size of 500 GB, which is one-third of the drive.
Select how you would like to partition the drive (refer back to my percentages, as that’s what I have used in the screenshots here), select Apply and then click Partition. After this, it will take a few minutes to partition, so be patient!
When completed should see the green check mark next to your drive and it should say Operation Successful. Now select Done and you’re done with the first partition.
Now to partition the rest of the space, you will click on Untitled under External and then click on Partition again.
Give the partition a name, pick a size and choose the format. Since this is going to be for Windows storage, I chose MS-DOS (FAT). You can also choose exFAT if you like as that is compatible with both Windows and Mac.
Partition Internal Drive
Partitioning an internal hard drive is pretty much the same in terms of the procedure you have to follow, but it’s a little bit different in how it gets implemented.
Since you already have OS X installed on your internal drive, when you click Partition and choose a size, you’ll notice that you can’t create a partition that is smaller than the amount of space already used on the drive.
My internal drive was already using 359GB of space, so when I typed in 200GB, it automatically changed it to 359GB and put up a message stating that the first volume cannot be removed and the volume could not be split because the resulting volumes would be too small.
So if you want to create an additional partition, the first thing is to create a partition that will include OS X and give you some additional space for installing programs, etc. Below, I left the name as Macintosh HD and made the partition 500GB. That means the partition where OS X is installed with have about 140GB of breathing room for extra data.
Basically, we are just shrinking the original partition, which took up the entire disk to something smaller. Then we will partition the free space as we like.
As you can see, I have made the original partition 500GB instead of 1TB, which frees up 500GB on the disk for creating other partitions. As with the external hard drive, once the partition has been created, click on Untitled, but this time under the Internal heading and click on Partition.
That’s basically all there is to partitioning drives in OS X. Hopefully, it worked for you. Enjoy!