Hello, Patch implements inode option to mkfs_opts command. This is needed because older versions of grub(for example in centos) do not understand filesystems created with newer version of e2fsprogs. By default in e2fsprogs 1.4+ creates partitions with 256 bit inode size, and grub expect 128 bit size. Usage: $ guestfish ><fs> add-drive test.img 1G #for small images by default used 128 bit ><fs> run ><fs> part-disk /dev/vda mbr ><fs> mkfs ext3 /dev/vda1 ><fs> tune2fs-l /dev/vda1 | grep "Inode size" Inode size: 256 ><fs> mkfs-opts ext3 /dev/vda1 inode:128 ><fs> tune2fs-l /dev/vda1 | grep "Inode size" Inode size: 128