Mar 15, 2018 To use HFSExplorer, connect your Mac-formatted drive to your Windows PC and launch HFSExplorer. Click the “File” menu and select “Load File System From Device.” It will automatically locate the connected drive, and you can load it. You’ll see the. Jan 09, 2020 Attach the removable storage device to your Mac. Start Disk Drill and select the external hard drive from the list of discovered devices. Click the “ Recover ” button and allow Disk Drill to scan your external drive for files that can be recovered. You will be presented with.
Looking for a way to install and run OS X on an external hard drive? This can be useful for a couple of different reasons. Firstly, it allows you to run another copy of OS X without needing any additional Mac computer.
Also, since you can run a full copy of OS X on the external drive, it can be used for troubleshooting purposes on other Macs or it can be as a kind of virtual OS X. I’ve already written about how you can install OS X in VMware Fusion, but that takes up space on your Mac. Using an external drive, you can save space on your Mac, though it might be a bit slower if you are using USB 2.0.
In this article, I’ll walk you through the requirements and steps to install OS X onto an external hard drive.
Format External Hard Disk
The first thing you’re going to need to do is format the external hard drive properly. The file format has to be Mac OS X Journaled and you have to use the GUID partition map. To do this, open Disk Utility and connect the drive to your Mac.
Under External in the left hand menu, click on your external hard drive and then click on the Erase button. Make sure you backup any data before you erase the drive. When you click Erase, a dialog will pop up where you can configure some options.
Give your drive a name, choose OS X Extended (Journaled) for Format and GUID Partition Map for Scheme. It should only take a minute or two for the drive to be erased and reformatted. Now your drive is ready for OS X.
Install OS X
There are two ways you can install OS X on to your external hard disk: by reinstalling OS X from the OS X Utilities repair screen or by downloading OS X from the App Store and running the installer. I’ll show you both methods in case one isn’t working for you.
The easiest way is to download OS X from the App Store. Once you open the App Store, you’ll see a link on the right for the latest version of OS X (El Capitan as of this writing).
Go ahead and click the Download button to start downloading the installer. Note that if you already have that version of OS X installed, you’ll see a popup message appear asking if you still want to continue or not. Just click Continue.
Once it has been downloaded, just double-click the installer, which will be located in the Applications folder.
Keep clicking past the license agreement, etc., until you get to the screen that asks you which disk to install OS X on. By default, it is set to MacBook.
Click on the Show All Disks button and you’ll see an icon for the different disks and partitions on the Mac. I named my external hard drive OS X and that shows up in the middle.
You can also tell it’s an external hard disk because it uses the icon with the orange hard drive. Click Continue and then follow the instructions to complete the installation. Note that your computer may restart during the install and you don’t have to do anything. OS X will automatically continue installing onto the external hard drive rather than booting up to your internal version of OS X.
External Hard Drive For Mac
At the end of this article, I’ll show you how to boot up to the external hard drive, so skip down if you ended up using the App Store method. Note that by default, the Mac will start booting up directly to the external hard drive until you change it.
External Hard Drive Mac Os
The second method to install OS X is to restart the Mac and press and hold the COMMAND + R keys. This will load up OS X Recovery.
The OS X Utilities screen will appear and here you want to click on Reinstall OS X. Again, you’ll go through some basic screens, but when you get to the hard disk screen, click on Show All Disks again.
Using this method, you’ll have to login using your Apple ID and password so that the entire OS X installer can be downloaded off of Apple’s servers. Whichever method you choose, it will take anywhere from 15 to 30+ minutes to install OS X onto your external hard drive.
While OS X is installing, your computer will restart a couple of times. Note that when it finally boots into OS X, that is the version running off your external drive. To switch back and forth between the internal and external drive, you have to restart your computer and hold down the OPTION key.
When you do that, you should see at least four icons. In my case, I have five because I have Windows installed using Boot Camp. Anyway, the grey MacBook and Recovery 10.11.2 icons are for my internal OS X and the orange OS X and Recovery 10.11.3 are for the version installed on my external drive.
Use the arrow keys to select which drive to boot from and then simply press Enter. If you have a newer Mac and a USB drive that supports USB 3.0, everything should run fairly fast. Overall, it’s a fairly straight-forward process and took me less than an hour to get everything working. If you have any questions, feel free to comment. Enjoy!
I’ve a problem I’ve never come across before and its how to copy files to External Hard Drive? I’ve just migrated from using Windows for 15 years onto Apple iMac and had been copy files easily on Windows without any hassle and thought I’d done the same on my iMac but seemingly they’re hard to copy the files or folders to any other External Hard Drive, I have tried to format it to FAT32 but it’s still the same. Do you have any ideas as to why this happens and how to solve this please?
Why Mac Files Won’t Copy To External Hard Drive?
The problem is that your drive is Windows NTFS formatted by default. Mac system is not support this format, OS X can’t write NTFS out of the box (at least not without some tweaks). Here are some ways to do this. So why Mac files won’t copy to external hard drive? There are several reasons:
1. External Hard Drive has been locked. You will get a notice said the item “folder name” could not be moved because “USB-HDD” cannot be modified. In fact, the external USB drive is not formatted for use with your Mac. the drive is formatted as NTFS which is normal in a Windows environment. While OS X is able to read from a drive that is formatted at NTFS, it cannot write to one. You will get a warning saying that the drive cannot be modified.
2. External Hard Drive in a read-only state. It is in a read-only state, you will not be able to copy and modify the file. So you need to check if the External Hard Drive in a read-only state or not.
3. Connection or damage issue about External Hard Drive. A misaligned or malfunctioning cable may be the cause of the problem, especially if you also have errors when trying to read from the external disk.
Guides to fix Mac Files Won’t Copy To External Hard Drive
1. Format the drive as HFS+, open the Disk Utility software in your /Applications/Utilities folder. Click on the drive in the list of drives in the left-hand side of the window. Then check the bottom of the window for the entry “Partition Map Scheme.” the normal Mac OS X format, using the Disk Utility. The downside is that you will lose ALL the data that is on the drive at the time of formatting. Remember to save everything to the Mac’s drive before you format.
2. Set the external hard drive onto unwriteable state. Unmount the drive by clicking on the eject button next to the drive’s name in a Finder window. Disconnect the cable entirely, then reconnect it first to the drive, then to the Macintosh’s USB, Firewire or Thunderbolt port. If this does not work, swap out the cable for a different one, if you have an extra available.
3. Determine Space Free. Single-click on the disk in the Finder, then choose “Get Info” from the “File” menu. Check to make sure there is space listed after the label “Available:” in the General section of Get Info. Also check the size of what you’re trying to put on the drive. Even if you have space on the drive, if the file you want to write over is larger than the space available, you won’t be able to write it to the hard drive.
4. Repair External Hard Drive from Disk Utility. Press Command + Space to open Spotlight search, type Disk Utility, and press Enter. Select your Mac’s system partition — generally “Macintosh HD.” Click the Verify Disk Permissions button if you’d like to check your permissions for problems. Click Repair Disk Permissions to check for problems and automatically fix them.
Note: Fix this issue need professional knowledge of Mac. If you haven’t sufficient expertise in dealing with this issue, it may lead to mistakes damaging your system. If you don’t want to waste time playing trial and error with every possible solution for it, welcome to contact Yoocare online Expert. Our professionals will locate the problem and work quickly safe your Mac.
Published by James B. Gonzalez & last updated on October 14, 2016 9:39 am