https://www.youtube.com/watch?v=8tTFgrOCsig<br />
https://www.raspberrypi.org/documentation/hardware<br />
/raspberrypi/booteeprom.md<br />
https://www.youtube.com/watch?v=LTMR-vPC9yM<br />
<br />
After OS install<br />
sudo  apt update<br />
sudo apt upgrade  -y<br />
sudo rpi-update<br><br />
sudo reboot now<br />
<b>sudo rpi-eeprom-update -d -a</b><br><br />
sudo reboot<br><br />
<span style="color:red;">sudo raspi-config</span>  .  at there,<br />
@pi,,Bootloader version update &set boot-order option<br />
*check boot_order to  *finish* <br />
sudo -E rpi-eeprom-config --edit<br><br />
sudo apt install rpi-eeprom-images, if necessary<br />
SSD pre-work<br />
Software Add @ pi4  gpated  ,,  partition정리<br />
Clone sd card to SSD fm accessory 88finish<br><br />
Sudo shutdown now