Difference between revisions of "Install/Prepare Disk"

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== Prepare Disk ==
== Prepare Disk == <!--T:23-->
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= Install Guide: Prepare Disk =
= Install Guide: Prepare Disk =  
   
   
{{InstallNavigation|num=2|prev=Download LiveCD|next=MBR Partitioning}}</noinclude>
{{InstallNavigation|num=2|prev=Download LiveCD|next=MBR Partitioning}}</noinclude>


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In this section, you will need to choose a disk format to use for booting and partitioning -- either MBR or UEFI/GPT. If you are not familiar with the differences between these options, please review our [[Install/Disk Formats|Disk Formats]] page for an overview of each option and the trade-offs. Generally, it's usually safe to pick the legacy MBR method for system disks under 2TB in size and most modern PC systems support MBR as well as UEFI booting.
In this section, you will need to choose a disk format to use for booting and partitioning -- either MBR or UEFI/GPT. If you are not familiar with the differences between these options, please review our [[Install/Disk Formats|Disk Formats]] page for an overview of each option and the trade-offs. Generally, it's usually safe to pick the legacy MBR method for system disks under 2TB in size and most modern PC systems support MBR as well as UEFI booting.


==== But First... ====
==== But First... ==== <!--T:25-->


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Before doing anything to your disks, make sure you are partitioning the right one. Use the {{c|lsblk}} command to view a list of all block devices on your system, as well as partitions on these block devices:
Before doing anything to your disks, make sure you are partitioning the right one. Use the {{c|lsblk}} command to view a list of all block devices on your system, as well as partitions on these block devices:


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Make sure you will not be overwriting any important data and that you have chosen the correct {{c|/dev/sd?}} device. Above, you can see that {{c|sda}} contains three partitions, {{c|sda1}}, {{c|sda2}} and {{c|sda3}}, and that {{c|sda3}} contains LVM volumes.
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{{Note|If you're not sure which disks are which, you can use {{c|lsblk -o MODEL,NAME,SIZE}} to show the device models matching the {{c|/dev/sd?}} names.}}


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Make sure you will not be overwriting any important data and that you have chosen the correct {{c|/dev/sd?}} device. Above, you can see that SATA disk {{c|sda}} contains three partitions, {{c|sda1}}, {{c|sda2}} and {{c|sda3}}, and that {{c|sda3}} contains LVM volumes. If you are using an NVME disk, then you may see {{c|nvme0n1}} as your disk, and your partitions (if any exist yet) will be named {{c|nvme0n1p1}}, {{c|nvme0n1p2}}, etc. If you are installing on microSD Card for Raspberry Pi, your disk will likely be {{c|mmcblk0}} and partitions will have suffixes {{c|p1}}, {{c|p2}}, etc.
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Once you've double-checked your target block device and made sure you'll be partitioning the correct disk, proceed to the next step.
Once you've double-checked your target block device and made sure you'll be partitioning the correct disk, proceed to the next step.
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Revision as of 04:45, December 12, 2020

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Install Guide: Prepare Disk

Install Guide, Chapter 2 < Prev Next >

In this section, you will need to choose a disk format to use for booting and partitioning -- either MBR or UEFI/GPT. If you are not familiar with the differences between these options, please review our Disk Formats page for an overview of each option and the trade-offs. Generally, it's usually safe to pick the legacy MBR method for system disks under 2TB in size and most modern PC systems support MBR as well as UEFI booting.

But First...

Before doing anything to your disks, make sure you are partitioning the right one. Use the lsblk command to view a list of all block devices on your system, as well as partitions on these block devices:

root # lsblk
NAME          MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sda             8:0    0  1.8T  0 disk 
├─sda1          8:1    0  512M  0 part 
├─sda2          8:2    0    8G  0 part [SWAP]
└─sda3          8:3    0  1.8T  0 part 
  ├─main-root 254:0    0  500G  0 lvm  /
  └─main-data 254:1    0  1.3T  0 lvm  /home
   Note

If you're not sure which disks are which, you can use lsblk -o MODEL,NAME,SIZE to show the device models matching the /dev/sd? names.

Make sure you will not be overwriting any important data and that you have chosen the correct /dev/sd? device. Above, you can see that SATA disk sda contains three partitions, sda1, sda2 and sda3, and that sda3 contains LVM volumes. If you are using an NVME disk, then you may see nvme0n1 as your disk, and your partitions (if any exist yet) will be named nvme0n1p1, nvme0n1p2, etc. If you are installing on microSD Card for Raspberry Pi, your disk will likely be mmcblk0 and partitions will have suffixes p1, p2, etc.

Once you've double-checked your target block device and made sure you'll be partitioning the correct disk, proceed to the next step.

Install Guide, Chapter 2 < Prev Next >