Can the bootarg set in the loader vanish after an upgrade? Last updated Save as PDF Share Share Tweet Share Views:153Visibility:PublicVotes:0Category:ontap-9Specialty:CORELast Updated: Applies to ONTAP 9 Answer Yes. The bootarg environment variable, which does not exist by default but is set via the loader, may be unset after an upgrade. Additional Information How to view, set, or unset a bootarg environment variable