We have an EC2/CentOS6 instance with "/" mounted to an EXT4 partition, and now another bigger sized hard disk formatted in XFS attached to the system. Since the former partition for "/" is insufficient in space and no LVM setup,

what's the steps if we want to move the "/" and all its contents to the new XFS?

Note that it's an staging server so downtime is just fine.

1 Answer 1


Try the following:

make sure you have a backup, it's a risky mission.

  1. Copy you system dd if=/dev/<device_name_fs_is_on> of=/path/to/other/location/filesystem.img bs=1048576 count=20480
  2. Format the new hard drive and create the needed filesystem
  3. Copy the file system dd if=/path/to/other/location/filesystem.img of=/dev/<new_device_name>
  4. Mount the new filesystem
  5. Edit fstab.
  6. Ask your Data-Center for an ipkvm in case something went wrong.
  7. reboot
  • You then need to grow the "new" root filesystem.
    – fpmurphy
    Nov 30, 2013 at 2:56
  • @fpmurphy1 he doesn't have lvm
    – Orlo
    Nov 30, 2013 at 11:49

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