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Thread: Bootable thumb drive

  1. #11
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    Default Re: Bootable thumb drive

    Ok. Well it didn't work. It came up with a loader version, indicated bios drive letter assignments, some other information that I could not decipher and halted.

    At least it started to work.


    Dolphin gives this error when I try to access the drive:

    An error occurred while accessing 'INSTALLER', the system responded: The requested operation has failed: Error mounting /dev/sdd2 at /run/media/scott/INSTALLER: wrong fs type, bad option, bad superblock on /dev/sdd2, missing codepage or helper program, or other error

    Could the errors fdisk -l revealed be the cause?

    What I wanted to know before was is the command to restore to dos specifically "dos"? Is there anything else like that "w" command I should do?

  2. #12
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    Default Re: Bootable thumb drive

    Quote Originally Posted by Scott_Swinyard View Post
    What I wanted to know before was is the command to restore to dos specifically "dos"? Is there anything else like that "w" command I should do?
    Okay, sorry about that.

    What I said to do with "gdisk" will remove the "gpt" structures. But then you need to put dos structures back there. You can do that with "fdisk", then create a single partition with "fdisk". Maybe then format as FAT or NTFS with "mkfs", or plug into a Windows box and format there.
    Last edited by nrickert; 22-May-2019 at 13:45.
    openSUSE Leap 15.1; KDE Plasma 5;

  3. #13
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    Default Re: Bootable thumb drive

    Just fyi for some unknown reason my dvd started working again and when I ran the installer dvd that I had already made to install bsd it behaved the same way the thumb drive did.

    Thanks for your help guys and for the useful information

  4. #14
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    Default Re: Bootable thumb drive

    Quote Originally Posted by Scott_Swinyard View Post
    Just fyi for some unknown reason my dvd started working again and when I ran the installer dvd that I had already made to install bsd it behaved the same way the thumb drive did.

    Thanks for your help guys and for the useful information
    Hi
    Sure it's not a UEFI boot only and your booting legacy (mbr), if you look at the openSUSE iso's it sets the boot flag on the second partition from the fdisk output.

    If you use gdisk -l <image.iso> instead of fdisk, what's the output like?

    Did you check the download sha256sum or equivalent?
    Cheers Malcolm °¿° SUSE Knowledge Partner (Linux Counter #276890)
    SUSE SLE, openSUSE Leap/Tumbleweed (x86_64) | GNOME DE
    If you find this post helpful and are logged into the web interface,
    please show your appreciation and click on the star below... Thanks!

  5. #15
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    Default Re: Bootable thumb drive

    I'm not sure what your first question means. When you say uefi do you refer to the iso or my hardware. My hardware is older bios based.

    To answer your second question:

    gdisk -l Trident-19.04-U1-x64-20190515.iso
    GPT fdisk (gdisk) version 1.0.4

    Caution: invalid backup GPT header, but valid main header; regenerating
    backup header from main header.

    Warning! Main and backup partition tables differ! Use the 'c' and 'e' options
    on the recovery & transformation menu to examine the two tables.

    Warning! One or more CRCs don't match. You should repair the disk!
    Main header: OK
    Backup header: ERROR
    Main partition table: OK
    Backup partition table: ERROR

    Partition table scan:
    MBR: protective
    BSD: not present
    APM: not present
    GPT: damaged

    ****************************************************************************
    Caution: Found protective or hybrid MBR and corrupt GPT. Using GPT, but disk
    verification and recovery are STRONGLY recommended.
    ****************************************************************************
    Disk Trident-19.04-U1-x64-20190515.iso: 7139452 sectors, 3.4 GiB
    Sector size (logical): 512 bytes
    Disk identifier (GUID): FA3DF87D-7740-11E9-8F66-AC1F6B626660
    Partition table holds up to 4 entries
    Main partition table begins at sector 2 and ends at sector 2
    First usable sector is 3, last usable sector is 7139449
    Partitions will be aligned on 1-sector boundaries
    Total free space is 7137817 sectors (3.4 GiB)

    Number Start (sector) End (sector) Size Code Name
    1 80 1679 800.0 KiB EF00
    2 3 32 15.0 KiB A501


    Third question: No I did not. Strictly speaking I don't know exactly how to do that.


    I think at this point I would prefer to have a healthy file to begin with rather than one that I had to depend on my ability to repair. This one looks pretty ****** up.

    Can I say that in here?

    HA. I guess not.
    Last edited by Scott_Swinyard; 22-May-2019 at 19:39. Reason: DEPEND ON MY ABILITY TO REPAIRHAD

  6. #16
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    Default Re: Bootable thumb drive

    Hi
    The image checksums are published here;

    https://project-trident.org/download/

    I see they have a lua based bootloader which may have issues... they suggest a bug report?

    So for the sha256 sum for example, you can either download the checksum file and have this in the same directory as the iso image, then use (it can take a little time to complete, be patient);

    Code:
    sha256sum -c Trident-19.04-U1-x64-20190515.iso.sha256
    It should report the iso image is OK, or just check the sum produced from;

    Code:
    sha256sum Trident-19.04-U1-x64-20190515.iso
    As long as it checks out, the dd command should work...
    Cheers Malcolm °¿° SUSE Knowledge Partner (Linux Counter #276890)
    SUSE SLE, openSUSE Leap/Tumbleweed (x86_64) | GNOME DE
    If you find this post helpful and are logged into the web interface,
    please show your appreciation and click on the star below... Thanks!

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