Linux SD for B2260

Linux Host

Linux Host

This section describes the process for installing a new Operating System using the SD Card method on a Linux host machine.

Step 1: Prepare MicroSD card
Step 2: Find SD Card Device name
Step 3: Recall download Location
Step 4: Unzip SD Card Install Image
Step 5: Go to directory with SD Card Install Image directory via the commandline
Step 6: Locate SD Card Install Image
Step 7: Install Image onto SD Card
Step 8: Prepare B2260 with SD card

####Step 1: Prepare MicroSD card

Ensure data from mircoSD card is backed up
Everything on microSD card will be lost by the end of this procedure.

####Step 2: Find SD Card Device name

From the host computer open “Terminal” (or equivalent) application
Remove SD card from host computer and run the following command:
```
$ lsblk
```
Note all recognized disk names
Insert SD card and run the following command (again):
```
$ lsblk
```
Note the newly recognized disk. This will be your SD card.
Remember your SD card device name, it will be needed in Step 7.

####Step 3: Recall download Location

Locate SD card install file from downloads page.
This file will be needed for the next step.

####Step 4: Unzip SD Card Install Image

When unzipped, you will have a file:
- Install Image (.img)

####Step 5: Go to directory with SD Card Install Image folder using Terminal

Open “Terminal” application on host machine
cd to the directory with your unzipped SD Card Install Image

$ cd <extraction directory>

#Example:
#<extraction directory> = /home/YourUserName/downloads
#For this example we assume the "SD Card Install Image" is in the downloads folder.
$ cd /home/YourUserName/downloads

####Step 6: Locate SD Card Install Image

Make sure you are in the extraction directory
Locate your preferred image file (latest one maybe the best option)

Unzipped SD Card download will be a file. Type ls from command line :

ls

#output
b2260-jessie_developer_YYYYMMDD-X.img

####Step 7: Flash Image onto SD Card

Checklist:

SD card inserted into host computer
Recall SD card device name from Step 2
Using the Terminal to copy b2260-jessie_developer_YYYYMMDD-X.img image file into SD card by running the following commands:

Execute:

$ sudo dd if=b2260-jessie_developer_YYYYMMDD-X.img of=/dev/XXX bs=4M
$ sudo sync

Note:

if=b2260-jessie_developer_YYYYMMDD-X.img: should match the name of the image that was downloaded.
of=/dev/XXX: XXX should match the name of the SD Card device name from Step 2. Be sure to use the device name without the partition name. For example, ‘of=/dev/disk1’
If you get an error message “Resource Busy”, you will need to unmount the SD card without removing it from the host computer.

Option 1:
- In the Applications folder, find and click on the Utilities folder.
- Click on the Disk Utility program to run it
- Select the device that represents the SD card
- Click on unmount and leave the SD card in the computer
- Retry the ‘$ sudo dd if=b2260-jessie_developer_YYYYMMDD-X.img of=/dev/XXX bs=4M’
Option 2:
- In the terminal window, enter this command:
```
$ sudo umount /dev/<device name>
```
This command will take some time to execute (a few minutes). Be patient and avoid tampering with the terminal until process has ended.
Once SD card is done flashing, remove from host computer and set aside for Step 8. You may see a popup window that tells you the device is Not readable by the operating system. Ignore the message and remove the MicroSD card from the host computer.

####Step 8: Prepare B2260 with SD card

Make sure B2260 is powered off
Connect an HDMI monitor to the B2260 with an HDMI cable, and power on the monitor
Plug a USB keyboard and/or mouse into either of the two USB connectors on the B2260
Insert the microSD card into the B2260
Apply power to B2260, wait for board to boot

Congratulations! You are now booting your newly installed operating system directly from SD card on the B2260!