I/O size (minimum/optimal): 512 bytes / 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes The MBR uses 32 bit for storing block address and for hard disks with 512-byte sectors, the MBR can handle maximum 2TB (2 32 × 512 bytes) hard dev]# fdisk -lĭisk /dev/sda: 21.5 GB, 21474836480 bytes, 41943040 sectors On the other hand in the Windows Operating System, the MBR can have maximum 24 partitions where 4 are primary and the rest are logical. In Linux Operating System the MBR can have maximum 15 partitions and among them 4 partitions are primary and the rest are logical partitions. It also contains executable code (referred to as a boot loader) to function as a loader for the installed operating system. The MBR holds the information about how the logical partitions that contains file systems are organized on the disk. The two most popular partition tables are MBR and GPT. A partition table is a partition of a disk that contains information about sizes and locations of partitions on hard disk and it is located at the first sector of the disk. Partition can be considered as a piece of disk space. On the other hand in Linux Operating System, the popular file systems are ext2, ext3, ext4, xfs (current), vfat, swap, ZFS and GlusterFS. In Windows Operating System, the popular file systems are FAT32 and NTFS.
In computer system, a File System defines how data or information is stored and retrieved from a storage disk. But before going to start, we should have some basic idea on the following terms. In this article, I will discuss how to manage CentOS 7 or Red Hat 7 Linux partition with the fdisk tool. I also discussed how to configure network with nmtui tool as well as editing network files.
In my previous article, I discussed how to install CentOS 7 step by step with GUI mode (GNOME Desktop) or CLI mode (minimal installation). The guys who are also wish to be a system admin should be familiar with CentOS or Red Hat operating system. Almost all the system admins or IT guys who play with mail server, file server, proxy server and so on are so known with CentOS or Red Hat Linux and cannot go a single day without this operating system. CentOS or Red Hat Linux is a popular server operating system to the system administrators.
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