Hello Maxim, > + ;; Disable the metadata_csum and 64bit features of ext4, for compatibility > + ;; with U-Boot. > + (file-system-options (list "-O" "^metadata_csum,^64bit")) > (flags '(boot)) > (initializer (gexp initialize-root-partition)))) ext4 man page states that ^64bit will prevent images larger than 2^32 blocks but I highly doubt that we will generate someday images that big. I think you can go ahead! Mathieu