It turned out that I first had to create a GUID Partition Table (GPT) on it to use the full capacity. USB drive could not be created and EFI system partition formatted as NTFS.My new LaCie rugged USB-C drive showed only a capacity of 372 MB instead of the 4 TB that I had bought, when I formatted the disk on Mac OS X High Sierra. Set the format type to Mac OS Extended (Journaled.)If you have an NTFS drive you can use macOS Disk Utility to reformat it. Click on the Erase tab in the DU main window. Next step: Select the volume you just created (this is the sub-entry under the drive entry) from the left side list. Set the format type to Mac OS Extended (Journaled.) Click on the Partition button and wait until the process has completed.And select USB from the Hardware section. No problems putting ICONs on the drive or storing and reading data.Select About This Mac from the Apple menu in the top-left corner, click on System Report. I did reformatting to HFS+, it took about 15 seconds. Partition scheme can also be switched to Apple, afterwards the drive can be formatted HFS, HFS+ or UNIX. Disk Utility allows to re-format in MS-DOS.I had to us the command-line. Firing up disk Utility, right-clicking the drive and selecting Erase. They show the partition type, either GUID_partion_scheme, APFS Container Scheme, or MBR_partition_scheme.Most USB drives, even those with only 2 TB of storage or less nowadays with a GPT but the 4 TB LaCie Samsung drives still used a Master Boot Record (MBR). Before that it showed 374 MB capacity, and Master Boot Record (MBR) for the partition map type.You can see similar information from the command-line: $ diskutil list2: Apple_APFS Container disk1 500.0 GB disk0s2Look for the lines starting with 0. It had large data containing archive.The drive displayed above is already converted./dev/disk2: The device name of the disk that you have found out before. Time to create a GUID Partition Table on it with: $ diskutil partitionDisk /dev/disk2 GPT JHFS+ YOUR-LABEL 0bFormatting disk2s2 as Mac OS Extended (Journaled) with name YOUR-LABELInitialized /dev/rdisk2s2 as a 4 TB case-insensitive HFS Plus volume with a 311296k journalThe command diskutil has many sub-commands ( verbs), and partitionDisk is one of them. It can take a couple of seconds for a disk to appear and disappear.You should have now identified your drive as something like /dev/disk2 (external, physical). Once with the drive plugged in, once plugged out (unmount first!), so that you can see it appear and vanish in the list. The easiest way of doing this is to run diskutil list twice.
Reformatting Usb Waiting For Partitions To Activate Mac OS X High SierraIf you choose to replace JHFS+ with APFS, you will see that diskutil list now shows two drives. Try out whether it is available: $ diskutil listFilesystemsThese file system personalities can be used for erasing and partitioning.When specifying a personality as a parameter to a verb, case is not considered.Certain common aliases (also case-insensitive) are listed below as well.Case-sensitive APFS APFS (Case-sensitive)Case-sensitive HFS+ Mac OS Extended (Case-sensitive)Case-sensitive Journaled HFS+ Mac OS Extended (Case-sensitive, Journaled)Journaled HFS+ Mac OS Extended (Journaled)The first entry is for APFS which means it is available. 0b means zero bytes which stands for use everything.Specifying diskutil partitionDisk without any argument prints help for the command.If you are using Mac OS X High Sierra or better, you may want to try out the new APFS (Apple File System) instead of Mac OS Journaled file system. 0b: The size of the partion. YOUR-LABEL: The label of the disk that is shown in Finder. Set up outlook 2013 for mac to receive email from two different email accountsYou have to use "MS-DOS FAT32" and not just MS-DOS FAT32. Choose them only, when you know what you are doing because a lot of software for Mac OS has problems with case-sensitive file systems.If you want to be able to use the disk with other operating systems, you should pick FAT32.Note that you have to use double quotes around file system types that contain a space.
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