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= Notes partitionnement

Voir [[https://papy-tux.legtux.org/doc1278/index.html|Partitionnement - Aide mémoire : parted, fdisk, sfdisk, gdisk, sgdisk]]

parted
<code ->
parted --script -a optimal /dev/device mklabel gpt mkpart primary 0% 100%
parted --script -a optimal /dev/device rm 1
</code>

<code bash>
luns=`ls|grep -v control`
for i in $luns
do
  parted -a optimal -s --  /dev/mapper/$i mklabel gpt mkpart primary xfs 0% 100%
done
</code>
https://pure-storage-openstack-docs.readthedocs.io/en/wallaby/swift/section_swift-partitioning.html



You can verify that the partition was successfully created and is properly aligned by using the parted command:
<code ->
# parted /dev/mapper/3624a937043be47c12334399b00016d73 align-check optimal 1
1 aligned
</code>



== sgdisk (compatible GPT)

Backup the table of /dev/sda:
<code bash>
sgdisk --backup=table /dev/sda
</code>

Restore the table to the new disk:
<code bash>
sgdisk --load-backup=table /dev/sdb
</code>

Backup and Restore from /dev/sda to /dev/sdb in one command:
<code bash>
sgdisk -R /dev/sdb /dev/sda
</code>

Finally randomize the GUID of all partitions on the disk:
<code bash>
sgdisk -G /dev/sdb
</code>

Method for MBR-Tables
Copy table from /dev/sda to /dev/sdb:
<code bash>
sfdisk -d /dev/sda | sfdisk /dev/sdb
</code>

(Optional)If you don’t see the partitions, read it again:
<code bash>
sfdisk -R /dev/sdb
</code>