Difference between revisions of "Linux Partition Table"
From Free Knowledge Base- The DUCK Project: information for everyone
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4 156GB 293GB 137GB ext4 /2 | 4 156GB 293GB 137GB ext4 /2 | ||
5 293GB 500GB 207GB ext4 /share | 5 293GB 500GB 207GB ext4 /share | ||
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+ | The UEFI partition is marked with the boot flag. This is the first partition read on system boot. From there UEIF directs which partition to load next, or in this case, which one to direct to grub2. To access the UEFI setup we reboot the machine and from the grub2 menu select "System setup." | ||
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+ | Q: When I have more than one partition with an active operating system, why does UEIF Startup Menu, Boot Menu (F9) only show one of the operating systems for UEFI Boot Sources? |
Revision as of 12:39, 30 August 2019
MBR (Master Boot Record) and GPT (GUID Partition Table) are two different types of partition table available to linux users now.
- MBR standards for Master Boot Record. It was introduced with IBM PC DOS 2.0 in 1983.
- GPT stands for GUID Partition Table. It is associated with UEFI
GPT
Use the command 'gdisk' which is GPT fdisk to work with your GPT partition table.
More useful might be 'parted'. Here is example output:
(parted) print Model: ATA ST3500413AS (scsi) Disk /dev/sda: 500GB Sector size (logical/physical): 512B/512B Partition Table: gpt Disk Flags: Number Start End Size File system Name Flags 1 1049kB 1075MB 1074MB fat32 EFI System Partition boot, esp 2 1075MB 18.3GB 17.2GB linux-swap(v1) 3 18.3GB 156GB 137GB ext4 / 4 156GB 293GB 137GB ext4 /2 5 293GB 500GB 207GB ext4 /share
The UEFI partition is marked with the boot flag. This is the first partition read on system boot. From there UEIF directs which partition to load next, or in this case, which one to direct to grub2. To access the UEFI setup we reboot the machine and from the grub2 menu select "System setup."
Q: When I have more than one partition with an active operating system, why does UEIF Startup Menu, Boot Menu (F9) only show one of the operating systems for UEFI Boot Sources?