Converting an ext3 file system to ext4

иконографияикони(adapted from https://ext4.wiki.kernel.org/index.php/Ext4_Howto#Converting_an_ext3_filesystem_to_ext4) Assuming you have enabled ext3 on your filesystem via: # tune2fs -j /dev/DEV It is very easy to then enable the ext4 features on an existing ext3 filesystem, using the command: # tune2fs -O extents,uninit_bg,dir_index /dev/DEV WARNING: Once you run this command, the filesystem will no longer be mountable using the ext3

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