Saw this on Spectra in Florida running 21.1 with MB11 ramclear.
BOOTING `CJOS64 (vmlinuz-5.3.0-58-egm)'
root (hd0,0)
Filesystem type is ext2fs, partition type 0x83
kernal /boot/vmlinuz-5.3.0-58-egm root=/dev/mdo md_mod.start_ro=1 systemd.show_status=1 vt.handoff=1 tpm_tis itpm=1 tpm_tis.interrupts=0 fbcon=rotate:3
[Linux-bziImage, setup=0x4400, size=0xbd1380]