Linux › Section D · Disks and filesystems › Topic D.1
Partitioning disk devices
Before a new disk can hold files it needs a partition table, a small map that divides the disk into regions. Knowing the two table formats, the tools that edit them and the units they report keeps you from wiping the wrong disk.
In this topic
- Layers on a disk
- The MBR partition table
- The GUID Partition Table
- Tools for viewing and editing
- Sectors, units and alignment
- Safety before you write
- Worked example: a GPT layout with fdisk
- Worked example: checking the numbers
- Telling the kernel
- Common mistakes to avoid
- Key takeaways
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