Am I right in assuming that rootfs4 is the equivalent to 'base install' and nothing else?
Yes,the manual full install guide has been updated.
Install base:
# unlzma < rootfs4.gz | cpio -id
Install justx:
# unlzma < rootfs4.gz | cpio -id
# unlzma < rootfs3.gz | cpio -id
Install gtkonly:
# unlzma < rootfs4.gz | cpio -id
# unlzma < rootfs3.gz | cpio -id
# unlzma < rootfs2.gz | cpio -id
Install core:
# unlzma < rootfs4.gz | cpio -id
# unlzma < rootfs3.gz | cpio -id
# unlzma < rootfs2.gz | cpio -id
# unlzma < rootfs1.gz | cpio -id
To generate a single rootfs.gz for a manual frugal install.
Copy the applicable rootfs*.gz to a directory.
cd
into the directory.
cat $(ls -r rootfs*.gz) > rootfs.gz