Hi all, I issued the commands on a single disk system: with two partitions / is linux sda1 and /home is sda3 yum -y update yum -y install e4fsprogs reboot umount /home tune2fs -O extents,uninit_bg,dir_index /dev/sda3 e2fsck -yfDC0 /dev/sda3 That worked just fine. I then had a different system that is software raid. where / is linux and md0 and /home is md1 yum -y update yum -y install e4fsprogs reboot umount /home tune2fs -O extents,uninit_bg,dir_index /dev/md1 at this point I get an error that invalid options for tune2fs Why is that and what to do next... The single disk sda3 worked fine. shouldnt the md1 work also. Thanks, Jerry