Format hard drive for apple mac

My hard drive in my Macbook completely broke a few weeks ago didn't have much on it thankfully , so I bought a new hard drive and replaced the old one. Now I'm not too sure how to set this new hard drive up as in putting an OS on it and formatting it correctly - I'm not concerned with getting any of my old data back on it, I just want to set it up as a new Macbook.

Similar questions I have found all seem to ask how to set it up with all the old data. How do I boot the system up safe boot, recovery etc. This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.


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You will also have the option to select "APFS". Some notes about APFS is given below. Normally you should not have to use the diskutil commands to erase the drive. Occasionally, step 5 fails, if step 4 is skipped.

How to erase a disk for Mac

If you feel lucky, you can try omitting this step. Use the Disk Utility application to erase the drive. If you are installing High Sierra macOS 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. 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?

How to Format External Hard Drive on Mac - compatible with Windows, Mac, Time Machine

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 guideā€¦. 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.


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  5. 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.

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

    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? I purchased a 4TB WD external drive and having a heck of a time reformatting this drive. I have tried all the above advice without getting to have this new hard drive formatted. Any other suggestions? I just keep getting the error Disk erase failed.

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

    There must be something new with High Sierra Is there an option besides just declaring the data irretrievable, and more importantly, how does a USB uninitialize itself? Will I be able to copy and share media across both Mac and Windows? I am Computer-Eleteret lol. Now My Mac is about There.

    This answer is more tailored to your question.

    I just have no Clue how to do it. Name required. Mail will not be published required. All Rights Reserved. Reproduction without explicit permission is prohibited. Enter your email address below: Posted by: Andy Robinson says: January 4, at 4: Fernando says: January 4, at AppleExpert3 says: November 12, at 2: AstroExpert2 says: July 6, at 3: Emaven says: January 4, at 8: April 22, at 4: Joe says: June 27, at 8: Sam says: July 28, at 8: August 21, at Roger says: April 10, at NYCer says: January 8, at 7: Ahmed says: November 26, at Lina Alvarez says: September 17, at 9: January 25, at 3: Thasleem says: March 17, at Debbie says: March 25, at 4: Enter a name for the external hard drive in the Name field.

    Click the Erase button. Published Date: Fri May 06 Yes No. Character limit: Maximum character limit is Start a Discussion in Apple Support Communities.