Set up disk on Windows 10 or 8.1 and you’ll be asked whether to use MBR (Master Boot Record) or GPT (GUID Partition Table). Today we’re explaining the difference between GPT and MBR and helping one for your PC or Mac.
GPT brings with it many advantages, but MBR compatible and necessary in some cases. This isn’t a Windows-only standard, by the way—Mac OS X, Linux, and other operating systems use GPT.
A partition structure defines how information is structured on the partition, where partitions begin and end, and also the code used during startup if a partition is bootable. If you’ve ever partitioned and formatted a disk—or a Mac to dual boot Windows—you’ve likely had to MBR and GPT. GPT new standard and is gradually replacing MBR.
What are GPT and MBR?
1. MBR – Master Boot Record
Introduced in 1983, MBR is the widely-used Partition structures. It actually holds the monopoly when it partitions. MBR stands for Master Boot Record and it’s used on multiple platforms like Windows, Mac, and Linux. a reason why MBR Master Boot Record. It’s because, at MBR-based drive, be a special boot sector.
This sector to store . Essentially, find a bootloader there. It’s also containing details about logical partitions on the . , if the drive has 4 partitions, details partition found in MBR. Although it’s the industry standard since when launched, MBR is now being replaced.
GPT partition scheme
GPT means GUID (globally unique identifier) partition table. Compared with MBR, GPT relatively new partitioning scheme, gradually replacing MBR. If your computer is and likely to use the GPT partitioning scheme. GPT more complicated and this part will dig about it. If not into technical details skip this part to read its main features.
This graph above explains the disk structure of the GPT partitioning scheme. First, notice that this picture uses LBA 0, LBA 1…to represent disk address, which used CHS (Cylinder-Head-Sector) addressing method. LBA (Logical Block Addressing) method is another important method to partition mass storage devices hard drives and SSDs. LAB 0 means sector whose physical number is 0 and LBA represents the second sector whose physical serial number is 1.
Simply put, limitations on MBR are embodied in two aspects: it works with disk capacity up to 2TB in size and supports up to four primary partitions. Let’s have why these limitations exist.
The arrangement of logical sectors that constitute storage devices is described by a scheme called LBA (Logical Block Addressing). One label represents per sector, LBA0 stands for logical sector on the disk last LBA represents the last logical sector. The capacity of the calculated by multiplying of logical numbers by sector. Currently, size of the logical sector is 512 bytes.
Thus, a 2TB will contain 3,906,250,000 512-byte sectors. But system requires 32 information to represent number. In other words, if the disk’s capacity is larger then what described by using 32 bits, require bit, 33bits. The MBR scheme sets a limit of 32 for of bits represent of logical sectors. number be addressed by 32 bit is 4,294,967,295 which is 2.199TB of capacity for a 512-byte sector . a capacity exceed 2.2TB addressed by the MBR partitioning scheme.
MBR vs GPT: which partition style is best?
If up partitions on a , both MBR and GPT will usually still be offered as options. However, GUID partition tables solution hardware because they support number of partitions and restrictions as regards of the or the partitions (or none become relevant near future). Moreover, for disks with 2 terabytes of memory, GPT only solution. of the old MBR partition style is therefore now only recommended for older hardware and older versions of Windows and other older (or newer) 32-bit operating systems.
Convert to GPT Disk via Windows Built-in Utilities
With Windows Disk Management and Diskpart tools, you’re allowed to convert an EMPTY to MBR or GPT with ease. , to delete all existing partitions first place. Therefore, important data to place . Here takes convert to GPT using Diskpart .
1. Press Windows key + R key simultaneously to lift the Run box. Input “diskpart” and press Enter.
2. At DISKPART prompt, input the following commands successively, command follows an Enter pressing.
select disk n (where n disk number of target disk)
clean (this command will erase the entire disk)
convert gpt (or convert MBR)
Converting from MBR to GPT
If using disks partitioned using the Master Boot Record this isn’t , but worth remembering that risk loss event of a hardware fault. Considering this, providing your system offers support for GUID partition tables (i.e. 64-bit system; for Microsoft Windows 7 or higher), we recommend convert your existing MBR partitions to GPT partitions. There are special tools for doing this, although many systems have a built-in conversion solution.
In Windows, , convert partitions using the “Disk Management” tool. The steps are as follows:
Open the “Administrative Tools”.
Find the icon for the “Computer Management” service and double-click .
In the menu pane on the left, select “Disk Management” (listed “Storage” section).
Windows will now show you of the disks on your device, including any partitions that configured. Right-click on the relevant “Convert to GPT disk”.