I have an issue with my initial boot. Indeed: I did it on a SD card and it seemed to have work as shown in the following picture:
yet when I connect the Raspberry Pi with the card to the display screen with the HDMI wire I have a "no signal" message...
What went wrong?
I have read from Getting Started with the Raspberry Pi, on raspberrypi.org, that
the red LED marked PWR will light (except for the zero). The green LED marked OK (or ACK in later version) will blink in an irregular pattern to show whenever the Pi reads from the SD card.
Yet this never occured on my Raspberry...
Furthermore, I wonder whether it is because when writing an image (eg using 'DD') I have to ensure that the destination is the entire card and not a partition on it. Indeed the few writing operations on the command line where:
dd bs=1M if=2016-03-18-raspbian-jessie.img of=/dev/devmmcblkop& dd bs=1M if=2016-03-18-raspbian-jessie.img of=/dev/sd1& sudo dd bs=1M if=2016-03-18-raspbian-jessie.img of=/dev/sd1&
Which one of the following commands would be most appropriate for writing to the sd card if any?
What I did
I first seach for the sda to umount:
/dev/mmcblk0p1 60M 0 60M 0% /media/antoine/BOOT /dev/mmcblk0p2 3,6G 3,2G 215M 94% /media/antoine/e6e7f776-11a4-4cd7-b4fd-c44ecdbfcf90
I umounted mmcblk0p2 and then tried again to give to the card the image.
:~$ sudo dd bs=1M if=2016-03-18-raspbian-jessie.img of=/dev/devmmcblkop 3847+0 records in 3847+0 records out 4033871872 bytes (4,0 GB) copied, 24,9113 s, 162 MB/s
Yet, once again the green light didn't blink and stayed on...