(N20) PC Hardware Basics part4 MBR and GPT, Disk Partion, File System
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MBR and GPT - Partition Styles
When a fresh/new disk drive connected system ask for initialize as MBR type or GPT type
When we install OS in fresh PC/System – OS and MotherBoard are BIOS firmware – Disk initialize as MBR
MotherBoard – UEFI firmware and OS is latest (uefi support) – Disk initialize as GPT
MBR: Master Boot Record
4 Primary partitions
3 Primary partitions and 1 extended partitions
1 extended –multiple no of logical drives
Partition Size support – up to 2TB
GPT:GUID Partition Table
128 Primary partitions
No extended- no logical
Partition Size : more than 2TB, Up to 18EB
Disk Management
CMD -run as Administrator -DISKPART
RUN- Diskmgmt.msc
-Initialized disk , offline, online, convert into basic to dynamic, convert into mbr to gpt
-partition: new simple volume, shrink, extend, delete
-volumes -raid volumes – simple , spanned, striped(raid0), mirror(raid1), raid5(optional)
PS C:\Users\User1) Get-Disk
Number Friendly Name Serial Number HealthStatus OperationalStatus Total Size Partition Style
------ ------------- ------------- ------------ ----------------- ---------- ----------
1 ST1000LM048-... WKPDFSMM Healthy Online 931.51 GB MBR
0 ST500LT012-9... W0VCWGA2 Healthy Online 465.76 GB GPT
2 Msft Virtual... Healthy Online 20 GB MBR
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File System – Format, to defines or redefine the file system
To store data in a device we need file system
File System tell how to store data or allocate in the device or drive
Win : FAT, NTFS
FAT12- 4GB, FAT32: Supports 32GB
NTFS - more than 2TB, up to 18EB
NTFS Features: Security, Encryption, Compression, Quota, and Indexing
exFAT – SD Card (more than 32GB)
ReFS – Resilient File System – CRC prevents data from corruption
Linux/Unix: ext3,ext4,xfs
Network sharing – NFS, CIFS (SMB)
DVD – UDF