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I bought Raspberry PI 2 and installed some web services on it. I have a fully functional Pi 2 with a 8GB micro SD card. 8GB is not enough so I bought a 32 GB card in order to have more available space. I want to transfer everything from the old card to the new one. I followed instructions here. I have a Raspbian installed. In short, here is what I did:

I plugged the old SD card in my Linux laptop, unmounted both partition, and typed the following command:

sudo dd bs=4M if=/dev/mmcblk0 of=./rpi-backup.img

The output is:

1881+1 enregistrements lus
1881+1 enregistrements écrits
7892631552 octets (7,9 GB) copiés, 399,078 s, 19,8 MB/s

I unplugged the card, plugged the new one, unmounted it, and typed the following command:

sudo dd bs=4M of=/dev/mmcblk0 if=./rpi-backup.img

The output is:

1881+1 enregistrements lus
1881+1 enregistrements écrits
7892631552 octets (7,9 GB) copiés, 1315,9 s, 6,0 MB/s

I eventually plugged the new card in my Raspberry PI and booted it. Unfortunately, I cannot SSH to it because it never received any IP. I do not have any screen to plug one on the Raspberry. Any idea on what I missed?

Thanks a lot!

Étienne
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2 Answers2

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"it never received any IP. I do not have any screen"

In other words it actually might not be running properly at all.

The green led should flash twice evenly on boot, then perhaps flicker a bit after that. If it flashes a greater number of times (probably repeatedly), this indicates a problem.

If never comes on at all, this would indicate the SD card is not properly inserted or the connector is broken -- but I do not think that is your problem. However I've noticed my Pi 2 will do this sometimes with an HDMI cable plugged in, but cutting the power then unplugging the cable, putting it back in and restoring the power correct that...go figure, I guess the power system is a little overly sensitive.

If it comes on and stays on, this indicates the SD card is not formatted properly.

You've already said you can mount and examine the first partition, so evidently it is partitioned well enough for that. You could double check the MBR as described in the last half of this answer.

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goldilocks
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I bought a new micro SD card and it is working. So the problem was probably due to an incompatible device!

Étienne
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