# Pastebin CugKe4Qr
U-Boot> bootfl scan -l mmc
Scanning for bootflows with label 'mmc'
Seq  Method       State   Uclass    Part  Name                      Filename
---  -----------  ------  --------  ----  ------------------------  ----------------
Hunting with: mmc
Scanning bootdev 'mmc@7e202000.bootdev':
  0  extlinux     ready   mmc          2  mmc@7e202000.bootdev.part /extlinux/extlinux.conf
No more bootdevs
---  -----------  ------  --------  ----  ------------------------  ----------------
(1 bootflow, 1 valid)
U-Boot> bootfl b
No bootflow selected
U-Boot> bootfl sel 0
U-Boot> bootfl b
** Booting bootflow 'mmc@7e202000.bootdev.part_2' with extlinux
boot prev kernel
1:	postmarketOS
Enter choice: 1:	postmarketOS
Retrieving file: /vmlinuz
Retrieving file: /initramfs
append: console=ttyS0,115200n8 rw gpt  pmos_boot_uuid=2c43c501-1463-4794-978b-87008a9d74a6 pmos_root_uuid=de754eba-8303-4f86-afb4-92ea093e9b7c pmos_rootfsopts=defaults
Retrieving file: /bcm2836-rpi-2-b.dtb
Skipping fdtdir / for failure retrieving dts
ERROR: booting os 'Invalid OS' (0) is not supported
Boot failed (err=-14)
U-Boot>