Sometimes when setting up the first partition, you will get a warning: “ Warning: The resulting partition is not properly aligned for best performance.” Note3: To specify all the remaining space, use -1 as end position. Note2: The partition doesn’t start at 0 but 1MB to avoid disk alignment problems. Note1: Specifying ext4 doesn’t format the partition in ext4, it only tags it as ext4 partition. To create a primary partition with the ext4 type (here starting at 1MB and finishing at 400GB), type: (parted) mkpart primary ext4 1MB 400GB Note: Type mktable msdos to create a MBR partition table. Number Start End Size File system Name Flags Warning: The existing disk label on /dev/sdb will be destroyed and all data on To create a GPT partition table on the /dev/sdb disk, type: (parted) mktable gpt To select the /dev/sdb disk, type: (parted) select /dev/sdb Here, we’ve got a disk called /dev/sdb without partition but with a MBR partition table (Partition Table: msdos). Partition Table: msdos Number Start End Size Type File system Flags Number Start End Size Type File system Flags Sector size (logical/physical): 512B/512B To list all the disks and partitions, type: (parted) print all Welcome to GNU Parted! Type 'help' to view a list of commands. To start the parted command, type: # parted Any mistake could entirely destroy your system. Recently, a new tool called gdisk has been created to deal with GPT partition tables, offering an alternative to the parted command.Ĭaution: In this tutorial, we are dealing with real disks. Historically, two commands exist to manipulate disks and partitions: fdisk and parted.Īs the fdisk command doesn’t handle GPT partition tables, it is not advisable to use it any more (for your information, some details are given at the end of this page about the fdisk command). More details are available on the GPT Wikipedia page. To work around all these limitations, recent disks use 4096-byte sectors and the GPT partition table ( GPT stands for GUID – Globally Unique IDentifier – Partition Table). More annoying, on disks with capacity greater than 2TB, space above this limit is not available. If you want more than that, you need to create an extended partition (using one of the 4 primary slots), and then create logical partitions inside. This organization allows for 4 primary partitions only. Not recent disks use 512-byte sectors and the MBR partition table ( MBR stands for Master Boot Record). Partitions get their names from the disk name itself and add a number starting at 1 ( /dev/sda1, /dev/sda2, etc or /dev/vda1, /dev/vda2, etc).Ī partition table is a special structure containing partitions organization. PresentationĪ disk can be used as a simple entity or broken up into one or more partitions.ĭisks are generally called /dev/sda, /dev/sdb, etc, in physical servers ( s for scsi even though they’ve got IDE, SATA or SAS interfaces) and /dev/vda, /dev/vdb, etc, in virtual machines.
0 kommentar(er)
