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Autosave: 2024-05-06 13:20:05

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thomasabishop 2024-05-06 13:20:05 +01:00
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zk/Partitions.md → zk/Linux_disk_partitions.md
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@ -1,15 +1,13 @@
---
tags:
- disks
---
# Disk partitions
# Linux disk partitions
A disk is divided up into [partitions](Partitions.md)
which are subsections of the overall disk. The kernel presents each partition as
a [block device](Devices.md#Devices) as it would with an
entire disk.
A disk is divided up into partitions which are subsections of the overall disk.
The kernel presents each partition as a [block device](Devices.md#Devices) as it
would with an entire disk.
The disk dedicates a small part of its contents to a **partition table**: this
defines the different partitions that comprise the total disk space.
@ -77,10 +75,9 @@ The two tools disclose that the main harddrive is `/dev/nvme0n1` (equivalent to
starts. This is where your bootloader is stored and that will be accessed by
the BIOS. In Linux this will be GRUB.
- Root dir (`/dev/nvme0n1p2`)
- This is the domain of the
[superuser](User_Space.md#root-user-superuser). The part
of the filesystem that you need sudo priveleges to access and where you
manage users
- This is the domain of the [superuser](User_Space.md#root-user-superuser).
The part of the filesystem that you need sudo priveleges to access and where
you manage users
- Home dir (`/dev/nvme0n1p3`)
- The domain of the user(s)
@ -173,13 +170,9 @@ umount /dev/sda2
```bash
# Load the disk into fdisk
$ sudo fdisk /dev/sda
# Select delete and run for each partition
Command (m for help): d
Partition number (1,2, default 2): 1
Partition 1 has been deleted.
Command (m for help): d
Selected partition 2
Partition 2 has been deleted.
@ -199,6 +192,7 @@ w
# Check execution:
$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
sda 8:0 0 465.7G 0 disk
```
@ -255,7 +249,7 @@ Calling ioctl() to re-read partition table.
Syncing disks.
```
We can now confirm out new partitions:
We can now confirm our new partitions:
```bash
$ lsblk