Format external disk mac os x

Formatting a Disk Using Disk Utility
Contents:
  1. How to Format an External Drive to Work with Mac (from NTFS to Mac OS Extended)?
  2. How to Format or Partition an External Hard Drive for Mac
  3. Format an External Hard Drive or USB Flash Drive for Mac OS X
  4. How to Partition an External Hard Drive on Mac

Mac OS Extended Journaled. Important note: If you have useful files stored on the external drive, be sure to copy or transfer them to another safe place prior to formatting. The operation will erase all data and your files will be gone for good. You could use a recovery program like Data Rescue to retrieve them, but the odds of recovery vary.

Pro tip: If your external drive has a large volume, like mine — a 2TB Seagate Expansion.

Disk Utility

I highly recommend you also create multiple partitions. When I opened it, the default content was all there. It showed this format:.

How to Format an External Drive to Work with Mac (from NTFS to Mac OS Extended)?

What is NTFS? The tutorial and screenshots below are based on macOS Sierra They might be different if your Mac has a different version. Make sure your drive is connected.

Select the one shown below. Learn more about the differences between these file systems from this thread. You can also check to see if the format was successful. Now your external drive has been formatted to be fully compatible with Apple MacOS, and you can edit, read, and write files to it as you want. Open the Disk Utility app and highlight your external hard drive. If you select the one below it, the Partition option will be greyed out and become unclickable. Located on the left is a big blue circle with the name of your external drive together with its volume size.

Then allocate the desired volume to each partition. You can do that by clicking the small white circle and dragging it around. To check whether the operation is really successful, go to your Mac desktop. You should see multiple disk icons show up. I chose to create two partitions on my Seagate Expansion — one for backup, the other for personal use. You can find more info in this post: That wraps up this tutorial article. I hope you find it helpful. As always, let me know if you have any issues during the formatting or partitioning process.

I can follow this to the letter until the partition section. Enter your email address below:.

How to Format or Partition an External Hard Drive for Mac

While the proportion of MB to 1TB is 0. Say a mouse is about 10cm long while the sun 1,,km in diameter, and the proportion of a mouse to the sun is 0. What if that USB drive has U3 software on it. Just be aware that the Mac-only formats are typically not readable […]. Help — new mac user. If I want to read files, videos etc on a mac, that I loaded onto my hard drive through a pc, how can this be done?

As the article mentioned, this is one of the common formats in external hard drives. Oh my gosh.


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Thank you. I have contacted customer service. I have reinstalled NTSF whatever. I was going to mail it back this morning. I just did what you said and it is now backing up. Keeping my fingers crossed but SO relieved! Can check this off my list and move on. I have external HD and want to use it with my mac. But I have several pictures on this HD. I want to be able to add folders and continue to put several of my pictures and files on it. WHat do I need to do? If the drive is not recognized by the Mac, you can use Disk Utility to recognize the PC formatting and then format it for Mac compatability: I have an external hard drive that used to work with my mac.

Now it is reasonable only on a mac but I can read and write in a windows pc. How can i make it read and write for both mac and windows.

How to FORMAT External Hard Drive for MAC

I have an external drive and tried going to disk utilities…. Erase…Mac OS extended journaled …. Erase I get an error that it is unable to format. Any suggestions? The comment at the end is confusing see the last phase in quotes below …Is that just an advertisement?

Format an External Hard Drive or USB Flash Drive for Mac OS X

I want to follow the 7 step instructions to format a backup drive for my Can I follow the 7 steps and achieve that? Yes, you can format an external hard drive for Time Machine this way. And no this is not the Dell site. Is it okay to keep it and reformat it for mac or am I much better off returning it and buying another one specifically for mac? Yes just format the drive for the Mac as described in this article on formatting an external hard drive to Mac OS X compatibility.

Same here! This is the exact message. It came straight from the box:. Erasing a partition deltes all the data on that partition, but does not affect other partitions on the same disk. Same here. Click Done to continue. The Disk Utility has changed, you might want to update the screen shots to reflect the new version, the Partition tab is noticeably different. It Fails and says: Disk Erase Failed. I get similar errors constantly when using USB hubs on Mac with external drives, but when plugged directly into Mac the hard drives work. Having the identical problem connected directly to USB on the back of iMac.

How do you tell if it is locked?


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  2. Format an External Hard Drive or USB Flash Drive for Mac OS X.
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  7. I have a new maxone external drive, and it is not recognized in the left-hand panel of the Disk Utility. It is connected by USB cable, plugged directly into mu iMac. I have an Iomega Ext. The storage is half full with over MB of storage left.

    How to Partition an External Hard Drive on Mac

    Am I able to continue with the formatting without erasing the current files that are already on it? I have a 1TB Toshiba external hard drive, I have been using on my iMac and have been able to read an write on it. Why is it working on my iMac and not on my macbook pro?

    It seems that the hard drive is formatted for Windows but it does work read and write on my iMac. Do I need to format this external drive to be able to use in more than one Apple computer? The one single thing, arguably one of the most important bits has been skipped altogether from this guide…. Majority if not all flash drives come not only with Windows dominant file systems, but also MBR formatted, vs the Mac where the operating system is always installed to a GPT partitioned disk. Format for Mac compatibility as described, I use it with every disk.

    You do not need to mess with schemes, this is not Windows. This is Mac. In this case you are formatting the drive to be Mac compatible. This is not about Windows. Just trying to figure out if I need to back my pictures up to a second hard drive before I do this. Backup everything you want to save. Nothing is left on the external hard drive after formatting is completed. This post is a lifesaver even 5 years down the track!

    Hi, I did what it said. But two of my USB are ruined, my computer cannot read them anymore. I kinda wanna cry. If you format a hard drive it erases the data on it.