Install Ubuntu on a micro SD card class 10 512GB

Question

I'm tryning to install Ubuntu 20.04 LTS on a micro SD Card as described above. But I am getting this error message:

XDG_URNTIME_DIR (/run/user/999) is owned by us (uid 0), but by uid 999! (This could e.g. happen if you try to connect to a non-root PulseAudio as a root user, over the native protocol. Don't to that.)

Also the benchmark of the disk is not delivering the desired Read/Write rate, being around 17/8 MBs R/W, I would like to know if this is a physical limitation of the card reader, a drive or Bios energy device control problem, like acpi or a problem with the card meaning it's damaged or not being an original sandisk.

Answer 1

Creating a Full install Ubuntu SD card from a Pre-built Image File.

If working in Windows:

• Download Image File: https://phillw.net/isos/linux-tools/uefi-n-bios/dd_unb_ubuntu-20.04_15GB_2020-06-26.img.xz (provided by sudodus) MD5SUM's can be found here: https://phillw.net/isos/linux-tools/uefi-n-bios/grub-boot-templates-for-uefi-n-bios.md5.

• Download Rufus*: https://github.com/pbatard/rufus/releases/download/v3.11/rufus-3.11.exe

• Double click Rufus exe file.

• Select SD card as Target drive in Rufus.

• Select above Image File in Rufus.

• Click Rufus start button.

• Wait for flashing to complete... Done.

(Password is "changeme", change it),

The SD card should boot on almost any modern X86-64 computer.

Thanks to sudodus for the image file.

In Windows it may be necessary to install 7Zip before proceeding. Rufus will use it when working with the .xz image: https://www.7-zip.org/a/7z1900-x64.exe

If working in Ubuntu: you can use mkusb, Disks or Etcher to flash the SD card. P7zzip may be needed to extract the image.