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Does GRUB support Ext4?

April 26, 2017ext4 GRUB support

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Does GRUB support Ext4?

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There is a patch in Red Hat Bugzilla to handle this. However it is a very invasive patch and has not been merged into GRUB for this release cycle due to lack of time for comprehensive testing and prioritization of other more important fixes. Since Fedora uses LVM by default and GRUB doesn’t support that either, in practice you will need to keep using the Ext3 filesystem for the /boot partition. This is the recommended setup and is how Anaconda sets it up by default. To prevent boot issues, Anaconda will not let you format a /boot partition with Ext4. The Live CD/DVD installer sets up /boot as a separate partition formatted as Ext3. If this behaviour is not what you want, you can use the regular CD/DVD or network boot images. Note that Rawhide (and hence Fedora 12) will support Ext4 on the boot partition.