Need Help With Xld And An External Drive For Mac
Use external storage devices with Mac. External hard drives, thumb drives, USB drives, Flash memory cards, and devices like iPod are examples of storage devices that you can connect to your Mac using Thunderbolt, USB, or FireWire cables, or connect wirelessly using Bluetooth. Backing up files to Seagate external hard drive is one of the best ways. Unlike internal hard drive, Seagate external hard drive is separate from your computer. Also, it’s separate from the risk of data loss owing to internal hard drive failure, system crash, virus attack, etc. External hard drive is very portable to take.
Photo by Sharon Vaknin/CNETIf you need to expand your storage space with an external hard drive and you use both Mac and PC, you'll likely run into a few obstacles. Hard drives advertised as being compatible with Windows and Mac OS may have misled you into thinking you could actually use one hard drive for both computers.You can, but not out of the box.Most external hard drives (HD) are sold in a format called NTFS, which is designed to work with Windows. Macs read and write to a different format, called HFS+. Another format, called FAT32 is compatible with both OS platforms.
Here's a look at how the different HD format types function:FAT32 (File Allocation Table)- Natively read/write FAT32 on Windows and Mac OS X.- Maximum file size: 4GB- Maximum volume size: 2TBNTFS (Windows NT File System)- Natively read/write NTFS on Windows. Read-only NTFS on Mac OS X- Native NTFS support can be enabled in Snow Leopard and above but has proven instable.- Maximum file size: 16 TB- Maximum volume size: 256TBHFS+ (Hierarchical File System, aka Mac OS Extended)- Natively read/write HFS+ on Mac OS X- Required for Time Machine- Maximum file size: 8- Maximum volume size: 8EiBIsn't FAT32 the obvious solution?According to the list above, formatting your hard drive to FAT32 so that you can read and write on either OS seems like the obvious solution.
The video and directions below will guide you through the process, but before you format your HD to FAT32, beware of these drawbacks:. FAT32 offers no security, unlike NTFS, which allows you to set permissions. If your HD gets into the wrong hands, that person will be able to access your data. The max size for any given file stored on a FAT32-formatted HD is 4GB. So, for example, if you want to store a 9GB movie, it will be impossible. In general, FAT32 drives are more susceptible to disk errors.
It's not a huge issue, but FAT32 is less efficient at storing files. Its large cluster sizes waste disk space, unlike the other HD storage formats.
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, 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 DiskThe 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.
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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 XThere 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.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.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.