[Create SteamOS recovery drive] Using Mac or Linux, create a SteamOS disk image flash drive to recover, repair, or re-image your Steam Deck

create_steamos_recovery_drive.sh

# NOTE: This process takes ~16 minutes on an M1 Mac

# RESOURCES:
# - https://www.cyberciti.biz/faq/how-to-create-disk-image-on-mac-os-x-with-dd-command/
# - https://help.steampowered.com/en/faqs/view/1B71-EDF2-EB6D-2BB3

# STEPS:

# 1.) Download the SteamOS .img.bz2 file from here: https://help.steampowered.com/en/faqs/view/1B71-EDF2-EB6D-2BB3

# 2.) Plug in your flash drive (must be 8GB or more)

# 3.) List available volumes
diskutil list
#=> /dev/disk4 (external, physical):
#=>    #:                       TYPE NAME                    SIZE       IDENTIFIER
#=>    0:      GUID_partition_scheme                        *8.0 GB     disk4
#=>    1:                        EFI EFI                     209.7 MB   disk4s1
#=>    2:       Microsoft Basic Data Lexar                   7.8 GB     disk4s2

# 4.) Find your disk in the list above and unmount it, e.g. /dev/disk4
diskutil unmountDisk <DISK_DRIVE> # e.g. diskutil unmountDisk /dev/disk4
#=> Unmount of all volumes on disk4 was successful

# 5.) Create the disk image drive
bzcat <IMG_FILE> | sudo dd if=/dev/stdin of=<DISK_DRIVE> oflag=sync status=progress bs=128M
# e.g. bzcat ~/Downloads/steamdeck-recovery-4.img.bz2 | sudo dd if=/dev/stdin of=/dev/disk4 oflag=sync status=progress bs=128M