VAR-SOM-MX6 Debian Recovery SD card: Difference between revisions

Latest revision as of 14:37, 16 September 2018

VAR-SOM-MX6 - Debian recovery SD card

Variscite provides a recovery SD card image that can be used to install the pre-built Debian images into the internal storage device/s of the SOM.

Download the recovery SD card image

Download var-mx6-debian-recovery-sd.vXX.img.gz (latest) from Variscite's FTP server: ftp://customerv:Variscite1@ftp.variscite.com/VAR-SOM-MX6/Software/debian

Write the image to an SD card

During the SD card image writing all files and partitions are erased from target device.
Double check that the device is correct to avoid accidentally overwriting a different device and potentially damaging your existing operating system.

Using a Linux based host

Plug-in the SD card to your Linux host PC, run dmesg and see which device is added (i.e. /dev/sdX or /dev/mmcblkX)

$ sudo umount /dev/sdX?*

# For  files:
$  <image name>. | sudo dd of=/dev/sdX bs=1M && sync

(Replace /dev/sdX with your actual device)

Using a Windows based host

Download Win32 Disk Imager from: https://sourceforge.net/projects/win32diskimager/ and install it.
Extract the downloaded image:
- For extracting a .gz file the latest 7-Zip can be used, for example.
- For extracting a .zst file the latest WinRAR can be used, for example.
Insert your SD card into your PC.
No need to format the SD card before writing the image to it, as the card will be formatted once it will be flashed.
Run the file named Win32DiskImager.exe (in Windows 7, 8 and 10 we recommend that you right-click this file and choose “Run as administrator”).
If the SD card (Device) you are using isn’t found automatically. Click on the drop down box and select it.
In the Image File box, choose the .img/.wic file you have extracted previously.
Click Write.
After a few minutes, you receive a notification that your SD has been created successfully.

Using a Mac OS X host

Use the dd Utility for MAC OS X to flash .img/.wic files to your SD card

Recover NAND flash/eMMC

Boot the board using the SD card.

Flash from command line

Login as root (user: root, password: root)
From Linux command line, type the following

$ debian-install.sh	- Flash Debian into eMMC (Follow instructions)

SD card image file tree

/opt/images/
└── Debian
    ├── imx6dl-var-som-cap.dtb
    ├── imx6dl-var-som-res.dtb
    ├── imx6dl-var-som-solo-cap.dtb
    ├── imx6dl-var-som-solo-res.dtb
    ├── imx6dl-var-som-solo-vsc.dtb
    ├── imx6dl-var-som-vsc.dtb
    ├── imx6qp-var-som-cap.dtb
    ├── imx6qp-var-som-res.dtb
    ├── imx6qp-var-som-vsc.dtb
    ├── imx6q-var-dart.dtb
    ├── imx6q-var-som-cap.dtb
    ├── imx6q-var-som-res.dtb
    ├── imx6q-var-som-vsc.dtb
    ├── rootfs.tar.gz
    ├── SPL.mmc
    ├── SPL.nand
    ├── u-boot.img.mmc
    ├── u-boot.img.nand
    └── uImage

The debian_install.sh script file is located at /usr/sbin/

@@ Line 1: / Line 1: @@
-{{PageHeader|VAR-SOM-MX6 - Debian recovery SD card}} {{DocImage|category1=VAR-SOM-MX6|category2=Yocto}}[[Category:Android]]
+{{PageHeader|VAR-SOM-MX6 - Debian recovery SD card}} {{DocImage|category1=VAR-SOM-MX6|category2=Debian}}
 Variscite provides a recovery SD card image that can be used to install the pre-built Debian images into the internal storage device/s of the SOM.
-== Preparing a recovery SD card ==
+== Download the recovery SD card image ==
-* Download mx6-som-recovery-sd.vXX.img.gz (latest) which is available on Variscite's FTP: ftp://customerv:Variscite1@ftp.variscite.com/VAR-SOM-MX6/Software/
+Download var-mx6-debian-recovery-sd.vXX.img.gz (latest) from Variscite's FTP server: ftp://customerv:Variscite1@ftp.variscite.com/VAR-SOM-MX6/Software/debian
-* Plug-in the SD card to your Linux HOST PC, run dmesg and see which device is added (i.e. /dev/sdX or /dev/mmcblkX)
-<pre>
-$ gunzip var-mx6-debian-recovery-sd.vXX.img.gz
-$ sudo umount /dev/sdX*
-$ sudo dd if=var-mx6-debian-recovery-sd.vXX.img of=/dev/sdX bs=1M
-(Replace /dev/sdX with your actual device)
+{{:Recovery_SD_card_general}}
-</pre>
 == Recover NAND flash/eMMC ==
+[[VAR-SOM-MX6_Yocto_Krogoth_Build_Yocto_release#Boot_the_board_with_a_bootable_SD_card|Boot the board using the SD card]].
-*Power-off the board.
-*Insert the SD card into the SD card slot of the carrier board (DVK)
-*Press and hold the boot-select button, and power-on the board while button is pressed
-*The board will automatically boot into Linux from SD card
 === Flash from command line ===
-* Login as root (no password)
+* Login as root (user: root, password: root)
 * From Linux command line, type the following
 <pre>
-$ debian_install.sh	- Flash Debian into eMMC (Follow instructions)
+$ debian-install.sh	- Flash Debian into eMMC (Follow instructions)
 </pre>
@@ Line 31: / Line 21: @@
 /opt/images/
 └── Debian
-    ├── SPL.mmc
-    ├── SPL.nand
      ├── imx6dl-var-som-cap.dtb
      ├── imx6dl-var-som-res.dtb
@@ Line 39: / Line 27: @@
      ├── imx6dl-var-som-solo-vsc.dtb
      ├── imx6dl-var-som-vsc.dtb
+    ├── imx6qp-var-som-cap.dtb
+    ├── imx6qp-var-som-res.dtb
+    ├── imx6qp-var-som-vsc.dtb
      ├── imx6q-var-dart.dtb
      ├── imx6q-var-som-cap.dtb
      ├── imx6q-var-som-res.dtb
      ├── imx6q-var-som-vsc.dtb
-     ├── rootfs.tar.bz2
+     ├── rootfs.tar.gz
+    ├── SPL.mmc
+    ├── SPL.nand
      ├── u-boot.img.mmc
      ├── u-boot.img.nand
      └── uImage
 </pre>