Pyo
Posts: 13
Joined: Sat May 16, 2015 7:08 pm

Moving a configured SD card from model 1 to model 2?

Wed May 20, 2015 6:02 pm

If I build do a basic configuration (just setting up the raspi.config) of the Pi OS on a Model 1B (single core 512MB) , can I use that configured SD card on a Pi 2 Model B?

Will it have all the necessary pieces of software to correctly support the 4 core 1GB new system or is it better to build up a new system from the beginning? Thanks!

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rpdom
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Joined: Sun May 06, 2012 5:17 am
Location: Chelmsford, Essex, UK

Re: Moving a configured SD card from model 1 to model 2?

Wed May 20, 2015 6:45 pm

If you do it from a recent image it should "just work" :)

An older image will need a "sudo apt-get update && sudo apt-get upgrade" first.

I assume you are aware that the original model 1 (not the "+" models) use a full size SD card and the model 2 uses a micro SD card (as do the A+ and B+ models)

Pyo
Posts: 13
Joined: Sat May 16, 2015 7:08 pm

Re: Moving a configured SD card from model 1 to model 2?

Wed May 20, 2015 7:20 pm

Thanks guys. I am aware of the size difference of the two SD cards and I am using build 2015-05-05.

My concern was whether different system modules were needed to support the BCM2836 (4 core) rather than the BCM2835 (single core). And whether or not the performance of the quad core system would be affected if you used a system that was built up on the single core system. Are the support modules the same for both Pi versions or does the system load the appropriate modules at boot time?

I know the old build works on a new system because I tried it - just a question of the support modules.
Thanks again :)

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rpdom
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Re: Moving a configured SD card from model 1 to model 2?

Wed May 20, 2015 7:44 pm

The Pi2 uses a different kernel (with a "v7" in the name) to the Pi1. Both versions of the kernel, and modules for both are included in the installed software.

Pyo
Posts: 13
Joined: Sat May 16, 2015 7:08 pm

Re: Moving a configured SD card from model 1 to model 2?

Wed May 20, 2015 8:34 pm

So just to get this clear in my head, what you are saying is that the Pi will pick the appropriate kernel modules it needs at boot time, regardless of whether I have this in a 1B or a 2B?

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rpdom
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Re: Moving a configured SD card from model 1 to model 2?

Wed May 20, 2015 9:05 pm

Pyo wrote:So just to get this clear in my head, what you are saying is that the Pi will pick the appropriate kernel modules it needs at boot time, regardless of whether I have this in a 1B or a 2B?
Exactly! :)

Pyo
Posts: 13
Joined: Sat May 16, 2015 7:08 pm

Re: Moving a configured SD card from model 1 to model 2?

Wed May 20, 2015 9:13 pm

Thank you sir! Appreciated :)

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