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Thread: no r/w privilege, SD card, lost & found file, live ubuntu, ext4

  1. #11
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    Re: no r/w privilege, SD card, lost & found file, live ubuntu, ext4

    greatsirkain; Hey, all that is great news... lookin better alla the time.

    Ok booting: Are you certain that grub (GRand Unified Bootloader) was installed to the MBR of the SD card ? And Just touching the obvious --bios is set to boot from usb, no ?

    just try'n to help
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    Happy ubuntu'n !

  2. #12
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    Re: no r/w privilege, SD card, lost & found file, live ubuntu, ext4

    yup pretty sure grub installed ok and boot from usb is enabled in bios (I have to boot from a usb because bios doesn't recognise the hard drive )
    when on thin ice; dance

  3. #13
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    Re: no r/w privilege, SD card, lost & found file, live ubuntu, ext4

    greatsirkain; Hey ..

    Try'n to hang with you...Let's define 1 single issue as the predominate one taking priority over any other.
    So I understand that you have ubuntu installed onto a external SD card and can not boot from that external device ?

    Boot that external device is what we are working toward ???

    I be try'n to help
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    Happy ubuntu'n !

  4. #14
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    Re: no r/w privilege, SD card, lost & found file, live ubuntu, ext4

    Yup, the 16GB san disk ultra SD card I installed Ubuntu to.
    I installed GrUB to the main device (/dev/mmcblk0) then Ubuntu to the first partition (/dev/mmcblk0p1).
    It's an Advent Quantum Q200 laptop and it's all set up to boot from USB.
    Ubuntu has no problems mounting/reading/writing to any partition on the card, all partitions checked and OK.
    Last edited by greatsirkain; July 11th, 2013 at 07:16 AM.
    when on thin ice; dance

  5. #15
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    Re: no r/w privilege, SD card, lost & found file, live ubuntu, ext4

    greatsirkain; Hey.

    Quite frankly I am not following the assignment " main device (/dev/mmcblk0) then Ubuntu to the first partition (/dev/mmcblk0p1)"
    Standard install I would expect an assignment such as "/dev/sdc"

    Raid and or raid/LVM ???.. Taking time to re-read the thread and see again where you are coming from.

    later
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    Happy ubuntu'n !

  6. #16
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    Re: no r/w privilege, SD card, lost & found file, live ubuntu, ext4

    greatsirkain; Hey,

    Looking about and find that sometimes there are issues of RAID as Intel SRT uses RAID for the SSD.

    What results form terminal command :
    Code:
    sudo blkid
    cheers
    THE current(cy) in Documentation:
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    Happy ubuntu'n !

  7. #17
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    Re: no r/w privilege, SD card, lost & found file, live ubuntu, ext4

    Hi Bashing-om, the mmc thing has been bothering me too
    found this
    Setting up two partitions which are the boot image (FAT 16) and root file system (ext4). The SD card plugged in through USB card reader found as /dev/sdb in this example (we’re formatting be sure of this!). If you plug MMC card to laptop slot, it may be found as /dev/mmcblk0.
    here http://lakm.us/logit/2013/03/duplica...-devkit-board/
    Don't think it's really relevant to me but it did put me onto Das U-Boot bootloader that seems to be able to do things syslinux can't...If you compile your own kernel? Maybe it's because I haven't had my coffee yet and I still have crusty eyes but this is starting to look too complex for a Friday morning

    Code:
    sudo blkid
    /dev/loop0: TYPE="squashfs" 
    /dev/sda1: UUID="B178-B232" TYPE="vfat" 
    /dev/sda2: LABEL="b127 laptop" UUID="5984-2E44" TYPE="vfat" 
    /dev/sdb: LABEL="SARDU" UUID="20CA-4D11" TYPE="vfat" 
    /dev/sr0: LABEL="Lubuntu 12.04 i386" TYPE="iso9660" 
    /dev/mmcblk0p1: LABEL="ubuntuboot" UUID="ddbd9593-1744-4fcd-b4ef-593d0dae12cd" TYPE="ext2" 
    /dev/mmcblk0p2: LABEL="dump" UUID="4343-AB0D" TYPE="vfat" 
    /dev/mmcblk0p3: UUID="fb2c9e61-8ad5-4195-aa06-13669b3b8d44" TYPE="swap" 
    /dev/sdc1: LABEL="SARDU" UUID="A8CF-6C55" TYPE="vfat"
    Thanks for the help you three, this is annoying me. The card cost 17 quid and hasn't done anything useful yet

    Edit: also this https://bbs.archlinux.org/viewtopic.php?id=97207 which seems to be exatly what I'm looking for but still by using a custom kernel

    Edit 2: I'm trying to learn about RAID now too and reading ( here: http://www.geeks.com/techtips/2005/techtips-020305.htm [although it was written in 2005] ) that a MMC is not an SD card although many, many other, newer, sites I've read define them as the same thing & say you can definitely boot from a MMC >.<
    Last edited by greatsirkain; July 12th, 2013 at 04:45 PM.
    when on thin ice; dance

  8. #18
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    Re: no r/w privilege, SD card, lost & found file, live ubuntu, ext4

    Quote Originally Posted by greatsirkain View Post
    Edit 2: I'm trying to learn about RAID now too and reading ( here: http://www.geeks.com/techtips/2005/techtips-020305.htm [although it was written in 2005] ) that a MMC is not an SD card although many, many other, newer, sites I've read define them as the same thing & say you can definitely boot from a MMC >.<
    I believe that any storage media that can appear in BIOS and its boot menu should also be able to boot. The only chance when it is logically questionable is when it does not appear in the BIOS.
    Varun
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  9. #19
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    Re: no r/w privilege, SD card, lost & found file, live ubuntu, ext4

    greatsirkain;

    I am known as Bashing-om ....but to be frank -> I do not know !
    1. ARM is a different architecture and so - out of the picture;
    2. Compiling the kernel from source not to be thought of as ubuntu prides itself on the kernel's ability to recognize hardware out of the box;

    3. It blows me away how the SSD is partitioned, formatted and a file system installed onto it with such an "unorthodox" partition table " /dev/mmcblk0p1:" ;
    4, That sure makes me hesitant to "sic" dmraid tools on that device as was my former intention.
    Maybe all that needs doing is to make a small "/boot" partition ? to make the other partitons format properly ?
    Make the partition(s) for ubuntu formats as "ext4" ?

    So what I am going to do .. is seek the guidance of oldfred and his contacts and see what he/and others make of this sloppyation.

    3 heads are better than 2
    THE current(cy) in Documentation:
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    Happy ubuntu'n !

  10. #20
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    Re: no r/w privilege, SD card, lost & found file, live ubuntu, ext4

    I have never installed to a memory card, just USB flash drives.
    But it looks like it uses a different driver than hard drives or USB flash drives, and is then mounted at /dev/mmcxxxx?
    For more info on UEFI boot install & repair - Regularly Updated :
    http://ubuntuforums.org/showthread.php?t=2147295
    Please use Thread Tools above first post to change to [Solved] when/if answered completely.

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