Madadm-notes: Difference between revisions

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Changing partition types
Changing partition types
8 [https://unix.stackexchange.com/questions/593681/changing-label-type-in-arch-linux-cfdisk|cfdisk examples]
* [https://unix.stackexchange.com/questions/593681/changing-label-type-in-arch-linux-cfdisk|cfdisk examples]


sfdisk can mirror two disks (usually) so that you can rebuild quickly..
sfdisk can mirror two disks (usually) so that you can rebuild quickly..

Latest revision as of 18:13, 30 October 2021

All the damn details of mdadm that you can never remember when a !@#$!#@ drive dies

Changing partition types

sfdisk can mirror two disks (usually) so that you can rebuild quickly..

there are ways to do this as a single command with pipes, but it sucks and does not always create the partitions correctly..

safer way: (Assuming sdb is toast)

  1. sfdisk -d /dev/sda > sda.out
  2. sfdisk /dev/sdb < sda.out
  3. sfdisk -l