I recently purchased a Seagate 1 terabyte Passport disk drive to move up from SD cards. I copyed the Raspbian image to the drive using the SD card copier tool it came with. Then I set up USB boot mode by opening the terminal and typeing in:
echo program_usb_boot_mode=1 | sudo tee -a /boot/config.txt
And then I typed:
vcgencmd otp_dump | grep 17:
And then it replied:
The tutorial I used said that it should reply this to indicate it programed the OTP sucsesfully, So I shut down the Pi, removed the SD card, and then powered on again. The rainbow screen showed up on the monitor, and the scrolling text appered, but it said a buntch of error messages instead, and one of them said my drive was unsuported and it could not boot. I do not Know what on earth I did wrong and I am very frusterated and I need help.