Muhammad Harits Syaifulloh

Thursday, August 18, 2016

How To Format USB Flash Drive into GPT in Mac

How To Format USB Flash Drive into GPT in Mac
GUID Partition Table (GPT) is a standard for the layout of the partition table on a physical storage device, such as a hard disk drive or solid-state drive, using globally unique identifiers (GUID). Although it forms a part of the Unified Extensible Firmware Interface (UEFI) standard (Unified EFI Forum proposed replacement for the PC BIOS), it is also used on some BIOS systems because of the limitations of master boot record (MBR) partition tables, which use 32 bits for storing logical block addresses (LBA) and size information on a traditionally 512 byte disk sector.

As of 2010, most current operating systems support GPT. Some, including OS X and Microsoft Windows on x86, only support booting from GPT partitions on systems with EFI firmware, but FreeBSD and most Linux distributions can boot from GPT partitions on systems with either legacy BIOS firmware interface or EFI. (Wikipedia)


How To Format USB Flash Drive into GPT in Mac

1. Plug USB Flash Drive intu USB Port
2. Open Disk Utility
3. Select the USB Flash Drive
4. Click Erase
5. Set scheme to GUID Partition Map
6. Click Erase then click on "Done" button ehwn the proccess finished.
Now look at the detail table at the bottom, at the Partition Map column it will change to GUID Partition Map.

The advantages and benefits of GPT disk

Compare with MBR partitioning style, GPT disk has more advantages. It allows each disk to have up to 128 primary partitions, and the maximum volume size can grow up to 18 petabytes, allowing using primary and backup partition table for redundancy. Also, it supports each GPT partition to have a unique identification ID (GUID). However, the maximum volume size supported by MBR disk is only 2 TB (terabytes) and each disk can only has at most 4 primary partitions (or 3 primary partition + 1 extended partition, in this way unlimited logical partitions can be created on extended partition). In addition, unlike the MBR disk, the crucial platform operation data are stored in partitions but not in the unpartitioned place or hidden sector. In addition, GPT disk district have a surplus of primary and backup partition table to improve the integrity of regional data structure. Learn more differences between MBR and GPT disk.

If you are using MBR disk and want to enjoy the benefits of GPT disk over MBR disk, AOMEI Partition Assistant Pro allows you to realize the conversion between MBR and GPT without data loss.

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