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Thread: maybe once more... T100TA Booting from SDCard ??

  1. #1
    Soundwave
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    maybe once more... T100TA Booting from SDCard ??

    I think, this question was made before but with a lot of hits under searching "sdcard boot" without solution

    so i will directly ask:

    is it possible to boot an Asus T100TA (64GB) Tablet from the SDCard ?
    or is it intended to be implemented in one of next bios?

    Thanks
    Big11

  2. #2
    Guide Guru & Forum Administrator
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    Welcome

    AFAIK it is only possible to boot from external USB when you have disabled secure boot. Not from the SD card slot. No BIOS updates have ever implemented this, nor are they likely to.
    rickscheller likes this.

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  3. #3
    Starscream
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    Quote Originally Posted by Big11 View Post
    ...is it possible to boot an Asus T100TA (64GB) Tablet from the SDCard ?
    or is it intended to be implemented in one of next bios?...
    Don't expect any more BIOS updates. T100TA is now superseded by other models.
    Asus Transformer T100TAM-C1-GM, Atom Z3775, 2GB-RAM, 64GB eMMC, Win8.1-32 updated to Win10-32
    ASUSTeK Computer Inc. -Support- Drivers and Download T100TAM

  4. #4
    Soundwave
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    The T100 can boot from a Micro SD if used in an adapter on the Type C slot if Secure Boot is disabled.

    Secure Digital card slots aren't natively included as a boot option in bios without modification.. On anything.

  5. #5
    Soundwave
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    Quote Originally Posted by NeoBeum View Post
    The T100 can boot from a Micro SD if used in an adapter on the Type C slot if Secure Boot is disabled.

    Secure Digital card slots aren't natively included as a boot option in bios without modification.. On anything.
    exfat or fat32 formatted?
    Last edited by kieron88; 11-05-2017 at 11:33 PM.

  6. #6
    Soundwave
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    It is able to boot from micro sd, you just have to place the kernel files on the internal drive, and point them to the sd partition.
    Here is how my setup looks like:
    EFI partition (100 mb)
    Some kind of Microsoft partition (100 mb)
    Win 10 on the internal storage's 3rd partition (approx 58 gb)
    A separate partition for grub (64 mb)
    An ext4 partition for Linux kernels and initrd images (250 mb)
    Recovery partition (resized to 800 mb)
    And i partitioned the sd card too:
    30 gb for storage
    and a 30 gb ext4 partition for Linux

    If you want to boot from the sd, I suggest to make at least a grub partition (I'll call it mmcblk2p4 to be more clear, you can check the partition number from linux, running the lsblk command), and the separate partition for /boot on the internal storage (for example mmcblk2p5). And of course partition the sd card as you need. (mmcblk0p1)
    Create these from windows and install one of the windows grub solutions to your grub partition (mmcblk2p4). After this boot into Linux from USB, install it, selecting the internal storage's partition (mmcblk2p5) for /boot (100-200 mb should be more than enough), and the sdcard's partition (mmcblk0p1) for everything else. Do not install grub from linux usb!!
    When this is ready, you won't be able to boot into the installed Linux, so boot the USB in live mode, and modify the grub.cfg file found on your grub partition (mmcblk2p4) similar to this:
    menuentry "ArchLinux {
    search --no-floppy --fs-uuid --set=root 2d4ff569-c63f-400f-b2af-2e96beef18b8 #--> this is the uuid of the sdcard partition (find it out by blkid command in linux)
    linux /vmlinuz-linux root=UUID=cb859565-b594-40dd-bc03-c311ae6fbb11 #--> this is the uuid of the partition where the kernel is located (on the internal storage), and edit the /vmlinuz-linux according to what you have on mmcblk2p5
    initrd /intel-ucode.img /initramfs-linux.img #--> if you install ubuntu for example, then you won't need the /intel-ucode.img, and edit the initramfs-linux.img according to what you have on mmcblk2p5
    }

    If there is no windows entry, here is an example:

    menuentry 'Windows 10 {
    search --file --no-floppy --set=root /EFI/Microsoft/Boot/bootmgfw.efi
    chainloader (${root})/EFI/Microsoft/Boot/bootmgfw.efi
    }

    If I was unclear somewhere feel free to ask
    Last edited by ger5; 01-11-2018 at 02:28 PM.

  7. #7
    Soundwave
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    I've had no luck with booting directly from the internal SD card reader. But here's got a question: What if you use an external USB SD Card adapter? Would the system boot that way?

  8. #8
    Asus USA Social Media Team
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    Quote Originally Posted by GD1951 View Post
    I've had no luck with booting directly from the internal SD card reader. But here's got a question: What if you use an external USB SD Card adapter? Would the system boot that way?
    Hi GD1951, theoretically it would work. However, this is something that we haven't tested and would recommend using a USB flash drive.
    Asus USA is a social support channel for North American purchasers. UK users requiring warranty support should contact their retailer. For other geographic locations, please check your product documentation or the Asus website for your locality and follow the support section instructions.




    Transformer Forums is a privately owned "user to user" forum and is not affiliated with ASUSTeK Computer Inc in any way.

  9. #9
    Jazz
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    the t100ta i have will not boot from SD card the UEFI will not let it, but since i put a modded UEFI on it i can boot from it now

 

 

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