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18 Janvier 2021
Not every USB drive can be used with a Mac out of the box, you'll need to format the drive to compatible with the MacOS extended file system. If you want to ensure full Mac compatibility on your USB drive or flash disk, just read this article. And you will find two ways which will teach you how to format a USB drive on Mac, including Disk Utility and Terminal command. And if you lost your important data because of formatting, you can use a data recovery tool to recover data from a formatted USB drive on Mac.
The Mac OS X Extended volume format is optimal for Macs; the Journaled option enables the system to log and keep track of files. The MS-DOS FAT32 or ExFAT volume formats are compatible with Windows computers. Securely Repurpose a Hard Drive Use the Security Options to format a previously used hard drive. Reinstall from macOS Recovery. Start up from macOS Recovery. To start up from macOS Recovery, turn on your Mac and immediately press and hold one of the following sets of keys on. Decide whether to erase (format) your disk. Erase, formatting, OS X installs on Mac's.Drives, partitions, formatting w/Mac's + PC's. Identifying the machine. First off if the machine is bootable to OS X, head to the Apple Menu About This Mac and note the OS X version. Then do More Information and write down all what you see there. How to Format External SSD for Mac Time Machine Default SSD Format. The Samsung SSD comes with ExFat format by default. This is enough to work the SSD as a backup drive. View Settings on Mac Disk Utility. Before you go for disk formatting, you have to change the view settings to see more. Formatting a drive so you can install and boot macOS requires the GUID partition map. Unfortunately, Disk Utility in macOS High Sierra doesn't make that option easy to find.
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The only way to be sure of the content you are formatting is to first remove the USB drive from Mac, know the title of other storage disks, insert the USB disk again and note the name of the disk. Now you are sure not to be formatting a wrong disk this way. Next, drag the USB data to a safe location for backup/recovery measures before formatting it. Then you are set to get it done!
You'll be given several format options when you try to format a USB drive on Mac, including OS X Extended (Journaled), OS X Extended (Case-sensitive, Journaled), MS-DOS (FAT) and ExFAT. If you are using macOS 10.13 or later, you'll also see an option named APFS, which is the default file system of macOS 10.13 and later.
APFS is a new file system for macOS. It's the most appropriate format for flash drives and SSDs. However, in order to write to this file system, you need to have the latest macOS. If you're sure that you won't connect the USB drive to a Mac computer running old version, then you can format your USB drive with APFS.
This is the default file system for macOS 10.12 and earlier. It doesn't put a limit on the size of files you can save on the drive, and that's the greatest advantage. Windows-running computers can read the files formatted to OS X Extended (Journaled), but can't write to them. In other words, you can transfer files from Macs to PCs without any problem, but you won't be able to transfer files from PCs to Macs. If you need to transfer data between PCs and Macs, you should consider other options.
The biggest difference between OS X Extended (Journaled) and OS X Extended (Case-sensitive, Journaled) is the latter is case-sensitive to folder names. Therefore, if you do not have special needs, you can ignore this option.
This is Disk Utility's name for FAT32 file system. It's compatible with Windows operating systems and macOS. A USB drive formatted this way can easily transfer data between PCs and Macs. However, a USB drive formatted to FAT32 doesn't support an individual file larger than 4GB.
ExFAT, the successor of FAT32, offers larger storage space and supports files larger than 4GB. So, if you need to transfer large files between PCs and Macs, ExFAT will be the best format for your USB drive.
As earlier stated, you need to first back up your USB drive before formatting the drive as you may not be able to recover the contents again. Now, you can follow the steps highlighted below to get it successfully formatted.
Office 2019 mac review. Step 1: Insert the USB to be formatted to a Mac computer.
Step 2: Navigate to Applications > Utilities, and click it twice to open it.
Step 3: Select the drive you want to format and click on Erase.
Step 4: Rename the USB drive (optional), and choose one file system from the options.
Step 5: Then select Master Boot Record for scheme, hit Erase.
Step 6: Once the process is done, you are ready to reuse the drive with new file system to save data again.
Step 1: Connect the USB drive to your Mac computer.
Step 2: Click on cmd + space to run spotlight, input terminal then tap Enter key.
Step 3: Type diskutil list to find the location of your USB drive (eg: dev/disk2 is the USB drive in the below picture).
Step 4: Type sudo diskutil eraseDisk FAT32 MBRFormat /dev/disk2.
sudo gives you user right.
Diskutil calls disk utility program.
eraseDisk commands to format.
FAT32 sets the file system.
MBRFormat tells disk utility to format with a Master Boot Record.
/dev/disk2 is the location of the USB drive.
Note: You can replace FAT32 with ExFAT in the command, and your USB drive will be formatted in that way.
After the process completes, type diskutil list in command once more to check if the USB drive has been formatted successfully.
Users perhaps format a USB drive by mistake. Only after formatting it, they would realize that they had lost important data. If you don' t have a backup for data, then you can recover lost data from formatted USB drive on Mac with this trusted data recovery software - iMyFone AnyRecover. You can now recover all kinds of data from formatted USB drive on Mac with only 3 simple steps.
- Your Comprehensive Mac Data Recovery Solution
You can get back your lost photos, videos, documents, compressed files, and numerous kinds of data from formatted USB drive easily.
It adopts all-round scan and deep scan simultaneously, which can greatly shorten the scanning time and recover more data.
It supports data recovery on all types of USB drives. It also supports file formats like NTFS, HFS+, FAT32, exFAT, etc.
It allows you to preview scanned files before recovery. And you can recover any 3 files for free.
Follow the simple steps below to recover data after formatting USB flash drive on mac:
Step 1: Make sure you have connected your USB drive to your Mac successfully. Launch AnyRecover software on your system and select the formatted USB drive you are trying to recover from. And press the 'Start' button to start the scanning.
Step 2: The software will immediately begin the scanning process. You can pause the process at any time and resume from that point later.
Step 3: Immediately after the scanning process is complete, the software will list all the files in their respective file formats and folders. Tick on and confirm what you are going to recover, then click on 'Recover' button.
Hello and welcome to my User Tip
As people begin to sell their used Intel processor Mac's problems are occurring when the new owner wishes to wipe everything and make the machine their own due to complexity of reinstalling various OS X versions, AppleID conflicts etc, so I will attempt to clear up the issue and provide concrete procedures you need to follow.
The previous owner is supposed to remove any firmware passwords, erase everything and reinstall the OS X version that came with the machine or OS X 10.6 (if the machine originally came with 10.6, 10.5 or 10.4), but usually this doesn't occur and when the new owner goes to update OS X or reinstall the OS, they are blocked in some manner.
This User Tip is designed to cover Intel Mac's, older PPC processor based Mac's came with their own OS X disks or 10.5 upgrade disks and that's the last OS X version that can run on those machines. 10.5 is currently not supported for security issues etc., so if your using this, use it off the Internet.
OS X boot drives formatting
All OS X boot drives must be formatted in Apple's Disk Utility (as minimal) 1 Partition: Option: GUID and OS X Extended Journaled as the format.
All OS X boot hard drives (not Solid State Disks) should be futher erased with the Security Option: Zero All Data or move the slider one spot to the right, this has a effect of wiping all data off the drive and also eliminates bad sector issues that can prevent a drive from formatting or even installing OS X. It does take some time to complete but it's worth it to prevent drive issues later. If the drive fails the zero erase procedure, it's bad and requires replacement. Be glad to know it now than later on and takes your data with it.
If you require more complicated behind the scenes action then read these
Identifying the machine
First off if the machine is bootable to OS X, head to the Apple Menu > About This Mac and note the OS X version.
Then do > More Information and write down all what you see there.
What is important is the Model Identifier, the Serial Number and the Memory, get all this written down.
If the machine is not booting into OS X, then you will have to work from the Serial Number located on the outside of the machine or box someplace.
This Apple support document will assist you getting the Serial Number: https://support.apple.com/kb/HT1349
If the machine is hold Command(⌘) r booting into RecoveryHD, or hold Command(⌘) Option/alt r booting into Internet Recovery (connected via Ethernet to router/modem (wired or built in keyboard needed for at boot key commands)
Then use Terminal and enter this command followed by the return/enter. With OS X being tied to a previous owners ID, you likely can't reinstall it.
ioreg -l | grep IOPlatformSerialNumber
Another method to get the profile of the machine is to use Apple's Hardware Test, which in some cases will provide Model Identifier and Serial Number as well as a host of other data about the machine, like the RAM etc. Apple also has links to identify the machine.
Newer machines download Hardware Test from Apple via the Internet, so connect a Ethernet cable (preferred) and press and hold the D key and boot the machine.
If your required to hold the D key down at boot, it takes awhile, so hold on for about 5-7 minutes.
You can try this to see if it works, no big deal if it doesn't, just see the link above and see if older Hardware Test versions will give you the reqired machine information.
This website will assist you in identifying the Model Identifier based upon the last 3 or 4 digits of the Serial Number.
The Model Indentifier looks like 'MacBook Pro 4,1' or similar.
You can also use the following Apple resources for assistance identifying your Mac NoteBook or Desktop:
To determine what OS your Mac NoteBook or Desktop shipped with you can use Mac OS X versions (builds) for computers.
Ok, at this point you should have the Serial Number and the Model Identifier at least.
Wired or built in keyboard needed
If the machine has a built in keyboard (laptops) then your ok, just use that. If the machine has a wireless keyboard, you will need to connect a wired one to proceed further.
A PC keyboard should work, the Windows key is the same as the Apple/Command Key and the option/alt is the same as well.
From now on, use the wired keyboard until your back setup on OS X and can establish a new wireless keyboard.
Checking for a Firmware Password
We need to check to see if a Firmware Password has been set on the used machine.
You can do this by holding Command⌘ V and booting the machine. What will occur differently when OS X is booting is you will see a black screen with a bunch of white text scrolling down and then presented by the log in screen or logging in as normal like before.
If your instead presented with a lock symbol and a request for a password, the a firmware password has been set and needs to be removed first before you can proceed.
You will need the firmware password to remove it, it's the ultimate lock down of a Mac designed for schools and security purposes. However it can be bypassed.
I recommend at this point you take the machine to a local Apple repair or store and have them reset the machine, as it involves doing internal work. Also you might want to take this opportunity to have them check the RAM amount and install more to max the machine of it's capacity to hold RAM, as it will perform better.
As a extra caution, I would bring receipts and proof of purchase of the used machine, because to Apple it technically belongs to another person on their records.
At this point there is no Firmware Password or it has been removed so the at boot key commands will work.
Last chance to backup any files
I do NOT advise TimeMachine being your only copy of your precious users files, make a copy of files to a normal regular external drive.
The reasons for this is TM is designed to restore the current machine owner, and if you come to find out it's all tied to the previous owner, your going to change that and thus may have troubles with TM.
So just having your user files on a external drive you can recover just those in your new setup.
Disconnect all drives when messing around with Disk Utility and OS X reinstalls to prevent TM from activating and making mistakes.
The quickest way to determine what you can do
Hold the Command⌘ Option r keys down using a wired or built in keyboard and boot the machine on a fast, reliable Internet connection using a Ethernet cable to your router (preferred) or connect using Wifi.
If you load Internet Recovery, then use that Disk Utility to erase the ENTIRE drive of all partitions, check under Partitions that the Partition: 1, Option: GUID and OS X Extended Journaled as the format, give it a name MacintoshHD and apply.
Quit Disk Utility from the file menu and install OS X using your AppleID and password.
This is the tester, if your AppleID and password is accepted and OS X begins installing, then your good to go.
You can upgrade to a later OS X version in AppStore or by calling Apple for the latest OS X version for that machine, they will send you a installer link.
If it doesn't install, it means that OS X version was purchased by the previous owner, you will need the 10.6 install disks.
More complicated OS X installs
Because OS X 10.7 (and up) upgrades are tied to a purchaser, like AppStore software is, they cannot be updated or reinstalled by another owner with a different AppleID and password.
Below is the lowdown on the more complicated OS X installs when Apple transitioned from boot disks to Internet only installs of OS X
If the machine was upgraded from OS X version 10.6.8 to 10.7:
Then using Internet Recovery (if the machine is capable of it) will restore OS X 10.7 as also will Recovery HD partition on the boot drive.
Only the original purchaser of 10.7 from the AppStore can reinstall OS X 10.7 using their AppleID and password.
Other owners will have to reinstall OS X 10.6 first via the appropriate 10.6 install disks, then can upgrade to the latest OS X version the machine supports via AppStore, or by calling Apple and ordering one of the later versions the machine supports and receiving a link to the download
If the machine was upgraded from OS X version 10.6.8 to 10.8:
Then using Internet Recovery (if the machine is capable of it) will restore 10.8 as also will Recovery HD partition on the boot drive.
Only the original purchaser of 10.8 from the AppStore can reinstall OS X 10.8 using their AppleID and password.
Other owners will have to reinstall OS X 10.6 first via the appropriate 10.6 install disks, then can upgrade to the latest OS X version the machine supports via AppStore, or by calling Apple and ordering one of the later versions the machine supports and receiving a link to the download.
If the machine was upgraded from OS X version 10.6.8 to 10.7, then from 10.7 to 10.8:
Then using Internet Recovery (if the machine is capable of it) will restore 10.7 and Recovery HD partition on the boot drive will restore 10.8.
Only the original purchaser of 10.7 from the AppStore can reinstall OS X 10.7 using their AppleID and password.
Only the original purchaser of 10.8 from the AppStore can reinstall OS X 10.8 using their AppleID and password.
Other owners will have to reinstall OS X 10.6 first via the appropriate 10.6 install disks, then can upgrade to the latest OS X version the machine supports via AppStore, or by calling Apple and ordering one of the later versions the machine supports and receiving a link to the download.
If the machine came with OS X 10.7 installed from the factory and upgraded to 10.8:
Then using Internet Recovery will restore 10.7 and Recovery HD partition will restore 10.8
Any owner can install 10.7 from Internet Recovery, but a AppleID and password is required.
Only the original purchaser of 10.8 from the AppStore can reinstall OS X 10.8 using their AppleID and password.
Other owners will have to reinstall OS X 10.7 first via Internet Recovery, then can upgrade to the latest OS X version the machine supports via AppStore, or by calling Apple and ordering one of the later versions the machine supports and receiving a link to the download.
The following machines are capable of installing OS X 10.6:
All Intel processor Mac's prior to 2011 will install OS X 10.6 with the 10.6.3 white retail disks sold online provided the machine originally came from the factory installed with OS X 10.6.2 or earlier.
All Intel processors Mac's prior to 2011 and released with OS X 10.6.3 or later originally installed from the factory require model specific install disks only attained by directly calling Apple and ordering them.
All Mac's sold new after January 2011 until apx July 20, 2011 (when OS X 10.7 was released) require model specific OS X 10.6 (10.6.3+) install disks that can only be attained by calling Apple directly.
Nearly all Mac's sold after July 20, 2011 came with factory installs of OS X 10.7, the firmware will refuse to boot off the 10.6 disks even if they are the model specific ones, however if OS X 10.6 can be put on the drive via Firewire Target Disk mode or removing the drive and using another Mac, then the Mac will boot from it.
How to find out what OS X 10.6 disks to use:
If your unsure of what OS X install disks will work, you can use the Model Indentifier (ex: MacBook Pro 4,2) to consult the free MacTracker as to find out what OS X version originally shipped on that machine (not perfect for 2011) or call Apple and provide the machines serial number.
The machines serial number or model identifier can be located in software or outside the machine: https://support.apple.com/kb/HT1349
Or if you have the machine connected to a Internet you can boot the machine while holding D down for about 7 minutes to load Hardware Test which has a pane at the top to select and provides the information.
How to erase and install OS X 10.6:
Make sure to erase the ENTIRE drive by selecting the drive makers name and disk size at the top, it's so the hidden partitions of later OS X versions are totally erased, thus if you decide to upgrade to later OS X versions via AppStore, they will install the hidden partitions more appropriate for you.
Also if you want to stick with Snow Leopard, the 10.6 install disk version of Disk Utility will be able to properly repair the drive if need be.
More information:
Mac studio fix powder nc25 review.
Any non-Internet Recovery capable machines with a new or completely erased boot drive (thus no RecoveryHD partition) will need the appropriate 10.6 install disks or USB thumb drive.
Internet installs of OS X require a fast, reliable, stable and no data capped/restricted size download capability.
All OS X 10.6 disks contain the entire operating system, despite their capability of appearing to upgrade older OS X versions of 10.4/10.5, rather what occurs is the older version is replaced in favor of the newer one, users accounts, files and most programs are left intact.
All OS X AppStore upgrades are also the same, they replace the older version with the newer one, leaving user accounts and most programs intact.
OS X 10.6 white retail disks don't contain the free iLife suite that is on the model specific OS X install disk versions.
iLife can be reinstalled from the OS X 10.6, 10.5 and 10.4 disks or extracted using Pacifist from CharlesSoft, Software Update to bring them current
Free iLife that came on factory installs of OS X 10.7 and up also can be restored if they are not tied to a particular AppleID yet, this occurs if a person buys a 'open box' and the previous customer has returned the machine, the store will wipe the drive of all data, can reinstall OS X from Internet Recovery, but can't reinstall the free iLife. As long as the previous customer didn't accept it in AppStore, it can be reinstalled on the machine by the next owner.
Good Luck 🙂
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