Format flash stick on mac

If the drive comes formatted in NTFS, which is the default file system for Windows, you're going to want to re-format the drive because Mac OS X can't write files to NTFS-formatted volumes at least not without a bunch of extra work that's beyond the scope of this article. How do you tell which format your brand-new USB drive has? Hook it up to your Mac and launch the Disk Utility app, located in your Utilities folder which is in Applications.

Your new drive should appear in the left-hand column, and clicking the "Partition" tab will bring up info on the drive which includes its current format. There are several possible file system formats you can use for a USB flash drive, and changing them in Disk Utility is as easy as selecting the number of partitions you want on the drive usually just one , picking the format you want for the drive, and clicking "Apply. Unless you have extraordinary needs, you can safely ignore two of them: I'll discuss the advantages and disadvantages of the other three formats below.

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Formatting your USB flash drive this way will give you full interoperability with Macs. You can even set up an OS X startup drive if you have the right files, the know-how, and a big enough flash drive, which will allow you to boot your Mac off an external disk if something goes wrong with your built-in drive. The "Mac OS Extended Journaled " option will have the highest degree of support for Mac OS X features, and there's no limit to the size of files you can put on the drive. Windows-running PCs can read files from drives formatted this way, but they can't write to them at least not without the same amount of work it takes to get OS X to write to NTFS-formatted drives.

Otherwise, you may need to consider one of the file formats discussed below. FAT32 offers near-universal interoperability with virtually every computing system on the planet. A drive formatted this way can easily transfer files between Macs and PCs. Subscribe to the OSXDaily newsletter to get more of our great Apple tips, tricks, and important news delivered to your inbox!

Enter your email address below:. 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. 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. 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? 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.

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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? 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.

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I have an Iomega Ext. The storage is half full with over MB of storage left. 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.

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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.

How to Format a USB flash drive on Mac

If you format a hard drive it erases the data on it. That is what formatting does, it erases a drive. What else do you think erasing a drive is supposed to do except erase the data? The main reason for formatting a USB drive as Fat32 on a Mac is that you want to be able to use the drive on a Windows PC, as well as a Mac — perhaps to transfer files between the two machines. You may also be preparing the drive for use as, say, a storage device for a media player or to record TV programmes on a TV with a USB port.

The fact that Fat32 can be read from and written to on both Mac and Windows makes it very versatile. However, there is a significant limitation — individual files have a maximum size of 4GB. There is a solution, however, exFAT. If you look for a quick and easy way to manage your drives, try using CleanMyDrive 2. With its help, you can drag-and-drop files directly to any drive, clean hidden junk from external drives, and check disk stats.

All the drives will be at hand in the menu bar, so you can get to see types of drives you have and manage them easily. There are a couple of things you should keep in mind, however.