name of boot kernel.

Dir within the image where config data is stored.

Prefix used for env vars.

Name of file whose absence triggers factory restore.

Prefix used in creating hostname.

Returns prefix for image name.

prefix to require on MAC addresses.

like MacOUI, but as bytes.

name of provisioning/mfg kernel.

Name of the primary volume.

Name of the recovery volume.

Override defaults.

Abstraction for strings that implementors will likely wish to change.