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To access a file, click to expand the stack, then open what you need. Finder New ways to view. More ways to do. Big‑screen debut. The USB can be used to put it on a media along with BC drivers. It needs to be 8GB. If you have a 8GB USB2 stick, copy the current contents to the OS X side and save them, and use it for installing Windows, and once complete, reformat it and put the saved contents from the OS X side back on the USB.
![How How](/uploads/1/2/5/6/125631826/283755871.png)
Here’s how to make a bootable installer of El Capitan on a USB Thumbdrive. It is the quickest way but it uses the terminal so it is for advanced users. If you want a way that is slightly longer but easier for beginners download and run which does the steps below for you automatically! How to make a bootable El Capitan Installer. Download and keep a copy of the ‘Install OS X El Capitan’ App. (Download from App store but make a copy of it before you install it as the Apple Installer deletes it after you use it.). Put it in your ‘Applications’ folder.
Format your blank USB (8GB is a good size) as Apple OS X Extended (Journaled) using Disk Utility and call it ‘Untitled’. Open Terminal and type in this: sudo /Applications/Install OS X El Capitan.app/Contents/Resources/createinstallmedia -volume /Volumes/Untitled -applicationpath /Applications/Install OS X El Capitan.app -nointeraction You will get a response like this: Erasing Disk: 0%. Copying installer files to disk. And after half an hour or so the USB drive will be a bootable OS X El Capitan Installer that you can use to install or upgrade OS X!
For more info check out the Apple Support article here: If you have trouble with DiskMaker X is a way to do it using the built-in Disk Utility in OS X.
In your case, the problem is the file system on the drive as opposed to how it is connected to your Mac. The drive is most likely formatted as FAT32 system. This is a typical partitioning format that is supported by practically all computers (windows, linux and mac os). FAT32 limits file sizes to 4GB and device sizes to 2TB (or 16 TB for 4 KB sectors). For you to be able to store a file greater than 4GB in size, you'd need to reformat the drive to either ExFAT (file size is limited to 16EB, or 16 BILLION TB) or a MacOS partition format (called HFS plus, file size limited to 8EB, or 8 BILLION TB).
I'd recommend the MacOS partition format for it's reliability, but only if you're working in a strictly Mac OS environment. HFS plus is NOT supported by Windows. If you need to transfer files between computers of various OSs, I'd recommend ExFAT.
Note: Changing partition formats WILL DELETE ALL DATA ON THE DRIVE, so make sure you back up all the data on the drive before you start. Back up all your files on the USB drive onto a secure location on your Mac. Open Disk Utility by searching it in spot light or opening it from /Applications/Utilities. Select your desired drive on the left side. Go to the 'Erase' tab.
Choose your desired partition format from the drop down menu, and name your drive as you please. Click 'erase'. Restore the files back to the drive.