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  1. #1

    Booting from USB Drive

    I enabled developer's mode and installed SeaBIOS.

    I created a bootable usb flash drive with dd if:/home/chronos/user/Downloads/install.iso of=/dev/sdaX bs=4M; sync.

    I, also, enabled the second level of dev mode with chromeos-firmwareupdate --mode=todev

    Finally, to have chrome boot into the usb drive I ran crossystem dev_boot_usb=1 dev_boot_legacy=1.

    But, when I restarted the computer and did Ctrl+L, and chose the bootable drive with the installation files I got:

    --------------------------------------------------------------
    Select boot devices:
    1. USB Drive PNY USB 2.0 FD 1100
    2. MMC drive

    Booting from Hard Disk...
    Booting from Floppy...
    Boot failed: could not read the boot disk

    No bootable devices. Retrying in 60 seconds.
    ---------------------------------------------------------------

    I do notice that it never says Booting from USB.

    What is the problem?

  2. #2
    I'd also like to boot from a flash drive.

    I have a "used" Samsung XE500C13-K01US from ebay.

    I used Rufus create the installation drive.

    I've read somewhere that Chromebooks have UEFI drives. (Silly me! I thought UEFI was for Windows.) I realize that you did a DD to create your install drive, but, I would try Rufus (which, I know, means using Windows) using GPT partition for UEFI. I've seen this work when everything else had failed.

    I've gotten as far as the developer screen, and the terminal, and the shell. When I reboot, I get the "OS verification is off" screen. When I "CTRL-L" the computer beeps but nothing else happens.

    Very frustrating.


    Last edited by gunghang; 09-05-2017 at 06:11 AM.

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