WD Elements 1TB: very good disk, high quality. USB 3 connector I suppose. Disconnect the drive ('eject'), shutdown the mac. Endnote for mac office 2016. Then start the mac and connect the WD again, USB. Open DiskUtility in Applications/Utilities. Does DU see the disk?

If yes: select the disk (the long name) choose the Partition tab: select GUID Partition Table, select a name for the disk, and then choose underneath that the Mac OS Extended (journaled) format, then select Apply. If no: what happens? Preferably make a screen shot (CMD+Shift+4 and select the part of the screen). Apple Footer • This site contains user submitted content, comments and opinions and is for informational purposes only. Apple may provide or recommend responses as a possible solution based on the information provided; every potential issue may involve several factors not detailed in the conversations captured in an electronic forum and Apple can therefore provide no guarantee as to the efficacy of any proposed solutions on the community forums. Apple disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site.

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The easiest way to format the drive is by using macOS built-in Disk Utility app. I started up the Disk Utility and tried to Erase it and make it APFS, but every time I try, I get the following error: MediaKit reports not enough space on device for requested operation. MacOS (previously Mac OS X, then OS X) is a series of graphical operating systems developed and marketed by Apple Inc. It is the primary operating system for Apple’s Mac.

A full startup disk is something that every Mac user will experience. And luckily, it’s a problem that has many solutions. In this article, we’ll go over: • What is startup disk full? • How to find what's causing startup disk full? • How to fix startup disk full? • How do I prevent startup disk full in the future?

However, we also understand that some people are short on time and just want to fix startup disk full. So, if you’re not really interested in what it is and why it happens, just skip the next two sections and head to “”. Or, even better, if you’d like an automatic, long-term solution that’ll keep your startup disk clean, we’d highly recommend a utility called. It'll help you clean up gigabytes of disk space in just minutes (you can ). Note: if you’re running macOS Sierra (or higher), it has a built-in option of Optimized Storage that is supposed to solve the problem of the full hard drive by moving files into the cloud.

That's why when your disk gets full on Sierra you see a different message. By clicking 'Manage' you can open the menu and see what Optimized storage offers. However, it moves junk and useless files to the cloud together with your files, and eventually you end up paying for iCloud storage to store junk. So we still recommend getting CleanMyMac and actually dealing with extra files rather than simply moving them. Now, with all that said, let’s get into what exactly “startup disk full” means.