radi
Posts: 1
Joined: Tue Sep 28, 2021 1:25 pm

Pi4 - 32bit - 64bit - armhf - arm64

Tue Sep 28, 2021 2:02 pm

Hi,

I using a Raspi 4 until yesterday with buster 32bit system .
Now I have updated to last system first, then I have upgraded to last distri. The Raspi running now on bullseye but with armhf

Now I need a way to switch from armhf to arm64

Is it possible to make a inplace upgrade / switch from armhf to arm64?

Greetings

Cloudcentric
Posts: 1277
Joined: Fri Sep 14, 2012 9:13 am

Re: Pi4 - 32bit - 64bit - armhf - arm64

Wed Sep 29, 2021 3:57 am

radi wrote:
Tue Sep 28, 2021 2:02 pm
Hi,

I using a Raspi 4 until yesterday with buster 32bit system .
Now I have updated to last system first, then I have upgraded to last distri. The Raspi running now on bullseye but with armhf

Now I need a way to switch from armhf to arm64

Is it possible to make a inplace upgrade / switch from armhf to arm64?

Greetings

Unfortunately a *simple* update from ARMHF (32bit Userland & 32 or 64bit kernel) to ARM64 (64bit Userland and 64bit kernel) is not feasible.

There are probably very convoluted ways to achieve but grabbing a spare SD Card is recommended.


Raspberry Pi Bullseye Operating System has not yet been Officially Released :?
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rpdom
Posts: 21171
Joined: Sun May 06, 2012 5:17 am
Location: Chelmsford, Essex, UK

Re: Pi4 - 32bit - 64bit - armhf - arm64

Wed Sep 29, 2021 7:31 am

Cloudcentric wrote:
Wed Sep 29, 2021 3:57 am
Unfortunately a *simple* update from ARMHF (32bit Userland & 32 or 64bit kernel) to ARM64 (64bit Userland and 64bit kernel) is not feasible.

There are probably very convoluted ways to achieve but grabbing a spare SD Card is recommended.
I have tried various methods, just to see if it can be done, but none of them were easy and so far I have been unsuccessful.

I had already upgraded all except one of my 64-bit systems with a clean install. I tested the upgrades on a spare Pi 3B+ and Pi 400.
Unreadable squiggle

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dickon
Posts: 2325
Joined: Sun Dec 09, 2012 3:54 pm
Location: Home, in Tiffield

Re: Pi4 - 32bit - 64bit - armhf - arm64

Wed Sep 29, 2021 7:43 am

I have done it successfully, just for the fun of it, but it's difficult, time-consuming, and really isn't worth the hassle. So much so that I haven't bothered to write it up, and it was long enough ago that I forget the gotchas.

Much, much better to reinstall. The usual --get-selections | --set-selections dance, with a backup of /etc, is easier, cleaner, less error-prone, and much more likely to result in a working system. But yes: it *can* be done. Just don't bother.
As it is apparently board policy to disallow any criticism of anything, as it appears to criticise something is to criticise all the users of that something, I will no longer be commenting in threads which are not directly relevant to my uses of the Pi.

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