We already posted "How to make a bootable SD/microSD/eMMC" in this link.  http://www.hardkernel.com/?b130
But few people have met the problem of flashing SD with 'win32DiskImager' or 'dd' utility.

Those utilities read data from an OS image file and write it to storage media.
But USB host in your PC, USB memory card reader or SD card itself may have problem to perform the secure and stable image copy.

Because of those root causes, the OS image can't be copied properly or corrupted in SD card.
So I decided to add a feature of verification of written image on the win32DiskImager Ver 0.6.

Basic flow of writing/verification is here!
1. Read 512KB from OS image file to buffer-a.
2. Write 512KB(buffer-a) to SD card.
3. Read 512KB from SD card to buffer-b.
4. Compare buffer-a with buffer-b. If they are different, stop the loop.
5. Increase pointer and goto #1 by end-of-file.



You can download the modified Win32DiskImage binaries in this link. It is working with WinXP/Win7.
http://dn.odroid.com/DiskImager_ODROID/win32diskimager2-binary.zip

Modified source code is here. You need the MinGW and Qt 4.8.4 SDK to compile it.
http://dn.odroid.com/DiskImager_ODROID/win32diskimager2-source_ODROID.zip

Note
1. The writing time is almost twice of the original version because of verification process.
2. The file name/path should not contain the 2-byte characters like Korean,Chinese,Japanese and so on.



ODROID-X,ODROID-U,ODROID-X2,ODROID-U2,ODROID-Q2

ODROID-U2,ODROID-U

ODROID-U / U2 board is half cased with heatsink. There are three screws to hold the board with heatsink.

There are three nuts mounted on the PCB.

The board is supported by three small nuts to heatsink. Please be careful especially when you connect cables. You must have to hold the board not the heasink when you connect cables. Otherwise, the nuts might be damaged and that could cause the board damage. Case 1 : USB connector

Case 2 : Ethernet Cable

Case 3 : HDMI Cable and Micro USB Cable

More tips! for cooling fan. The red line is outside.

ODROID-U,ODROID-U2

A lot of people asked us the dimension of PCB in ODROID-U/U2 for their DIY project.
Here is the mechanical drawings of the PCB. All the unit is "mm" and top-side-view.


Enjoy your DIY life.


This drawing is made by Ray_GTI-R.
It is a rough guide to Heatsink dimension and NOT an engineering drawing.



ODROID-U,ODROID-U2

If you buy the eMMC module with ODROID-X2, ODROID-U and ODROID-U2, it comes with a small PCB.
We call it eMMC reader. (center of below picture)



To write an OS image, you must assemble them as below pictures.
OS images can be found in our "Download" menu of this homepage.







It's time to put the USB memory reader into your PC.
And write the lastest OS image to the eMMC storage.
Refer below link to know how to do it.  It is very easy and simple.
http://www.hardkernel.com/?b130


Please note below items.
- Plug the reader board into USB memory reader as deep as possible for the stable connection.
- Assemble the reader board and eMMC module tightly.
- Some portion of eMMC protected/hidden blocks(about 8MByte) are not accessible with the reader.



ODROID-X2,ODROID-U2,ODROID-U