View source for Install/MBR Partitioning

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== MBR Partitioning == <!--T:34-->
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= Install Guide: MBR Partitioning = 

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{{InstallNavigation|num=3|prev=Prepare Disk|next=GPT Partitioning}}</noinclude>

==== Legacy (BIOS/MBR) Method ==== <!--T:36--> 

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{{Note|Use this method if you are booting using your BIOS, and if your Funtoo LiveCD initial boot menu was light blue. If you're going to use the UEFI/GPT disk format, then please proceed to the next section.}}

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First, it's a good idea to make sure that you've found the correct hard disk to partition. Try this command and verify that {{f|/dev/sda}} is the disk that you want to partition:

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{{console|body=
###i## fdisk -l /dev/sda

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Disk /dev/sda: 640.1 GB, 640135028736 bytes, 1250263728 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: gpt

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\#         Start          End    Size  Type            Name
 1         2048   1250263694  596.2G  Linux filesyste Linux filesystem
}}

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Now, it is recommended that you erase any existing MBR or GPT partition tables on the disk, which could confuse the system's BIOS at boot time. We accomplish this using {{c|sgdisk}}:

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{{Warning|This will make any existing partitions inaccessible! You are '''strongly''' cautioned and advised to backup any critical data before proceeding.}}

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{{console|body=
###i## sgdisk --zap-all /dev/sda

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Creating new GPT entries.
GPT data structures destroyed! You may now partition the disk using fdisk or
other utilities.
}}

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This output is also nothing to worry about, as the command still succeeded:

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{{console|body=
***************************************************************
Found invalid GPT and valid MBR; converting MBR to GPT format
in memory. 
***************************************************************
}}

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Now we will use {{c|fdisk}} to create the MBR partition table and partitions:

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{{console|body=
###i## fdisk /dev/sda
}}

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Within {{c|fdisk}}, follow these steps:

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'''Empty the partition table''':

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{{console|body=
Command (m for help): ##i##o ↵
}}

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'''Create Partition 1''' (boot):

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{{console|body=
Command (m for help): ##i##n ↵
Partition type (default p): ##i##↵
Partition number (1-4, default 1): ##i##↵
First sector: ##i##↵
Last sector: ##i##+128M ↵
}}

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'''Create Partition 2''' (swap):

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{{console|body=
Command (m for help): ##i##n ↵
Partition type (default p): ##i##↵
Partition number (2-4, default 2): ##i##↵
First sector: ##i##↵
Last sector: ##i##+2G ↵
Command (m for help): ##i##t ↵ 
Partition number (1,2, default 2): ##i## ↵
Hex code (type L to list all codes): ##i##82 ↵
}}

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'''Create the root partition:'''

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{{console|body=
Command (m for help): ##i##n ↵
Partition type (default p): ##i##↵
Partition number (3,4, default 3): ##i##↵
First sector: ##i##↵
Last sector: ##i##↵
}}

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'''Verify the partition table:'''

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{{console|body=
Command (m for help): ##i##p

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Disk /dev/sda: 298.1 GiB, 320072933376 bytes, 625142448 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x82abc9a6

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Device    Boot     Start       End    Blocks  Id System
/dev/sda1           2048    264191    131072  83 Linux
/dev/sda2         264192   4458495   2097152  82 Linux swap / Solaris
/dev/sda3        4458496 625142447 310341976  83 Linux
}}

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'''Write the partition table to disk:'''

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{{console|body=Command (m for help): ##i##w}}

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Your new MBR partition table will now be written to your system disk.

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{{Note|You're done with partitioning! Now, jump over to [[{{BASEPAGENAME}}#Creating filesystems|Creating filesystems]].}}

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