Help moving from a 2 to a 3 please

[chedz]

Hi.

I have an RPi 2 which I've spent months getting set up right. Apache, DB's, loads of cron, shell scripts etc. I wanted to move it across to a 3 for various reasons, so I got one and did what I thought was the standard upgrade....

1. Take a back up.
2. Run apt-get update
3. Run apt-get dist-upgrade
4. Reboot.
5. Clone sd card
6. Insert into new pi.
7..........the new 3 now just shows the coloured splash screen. The red light in on, no flashing and no sign of the green light and no network lights.

The new card works fine in the rpi2 so I'm at a loss what to do now. I'm fairly new to pi and Linux after years on mainframes so if anyone has any ideas or things to check please please help.

I've also tried a firmware upgrade on the old pi (switching card in and out of models)

Many thanks

Graham

[DougieLawson]

Is it a NOOBS card? If it is there's a merry dance needed to update the NOOBS bootcode stuff.

Same process needed as here: https://thepihut.com/blogs/raspberry-pi ... berry-pi-2

[Rive]

Did you have OpenGL enabled? The colored splash screen is GPU related is it not?

[kusti8]

Did you have OpenGL enabled? The colored splash screen is GPU related is it not?

The splash screen is produced by the GPU but is always there. If it doesn't progress past that, it can't read the SD card.

[chedz]

Hi again.

Dougie, I took your advice and made a step forward....the boot starts but now I get an Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(179,2)

I see this is a common problem but I can't figure out how to resolve it...

So I thought I'd abort my upgrade for the Tim e being and I just formatted the sd card and copied noobs onto it.....booted up and...same error. So I don't know what to try now. I tried pressing shift and booting up but it didn't do anything.

If anyone has any ideas I'd be very grateful.

Thanks

Chedz

[chedz]

Sorry, quick update.....nobs gas worked...so there's no problem with the pi of card.....just doesn't work with the updated version from my 2

[DougieLawson]

the boot starts but now I get an Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(179,2)

That means the cmdline.txt file is wrong. The root filesystem for a NOBS card is /dev/mmcblk0p6 not /dev/mmcblk0p2.

Use the NOBS recovery system editor to fix it.

[chedz]

Hi again dougie, thanks for the help.

This editor, do I need to plug the card into another pi via a usb card reader to do this? I can't figure out how to edit anything if I can't boot up otherwise.....the shift thing doesn't seem to work and I always get this error?

Many thanks

Chedz

[DougieLawson]

Hold [SHIFT] during boot and watch the magic happen.

[chedz]

Ah man, this is so frustrating.......I formatted and reloaded the sd card with the image from the model 2 pi that I had updated before cutting updated. I then again paste the latest noobs lite over it via a Windows PC and replaced any files already there.....

Then put sd card into the new rpi3.....I press and hold shift down.

No magic I'm afraid.....rather a load of messages, then it mentions secondary start kernel, then a panic error, but this time it says.....

Not syncing : vfs : unable to mount root fs on unknown block (0,0)

Any thoughts on this?

Appreciate the ongoing help..

Chedz

[chedz]

Oh just to add as I found an old post about out of date noobs versions, I am loading v 1.9 lite.

Cheers