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Re: How do I clone a Debian Distro from a 32Gb Class 10 MicroSD card to a 16Gb Class 10 A1 MicroSD card?

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On 2021-09-18 at 07:53, Reco wrote:

> 	Hi.
> 
> On Sat, Sep 18, 2021 at 12:35:13PM +0100, Myron wrote:
>> This is relatively easy to do on Windows.
> 
> This is true only if you're using that sad excuse for a filesystem
> called NTFS.
> 
>> No clue how to do this with Linux.
> 
> 1) Plug-in source card, use dump(8) to backup the contents of its
> filesystem.
> 2) Plug-in target card, create appropriate partition(s) on it.
> 3) Make the needed amount of filesystems on a target SD card.
> For ext4 you'll want to use -U option of mkfs to clone filesystem UUIDs
> (i.e. UUID on the target card must be the same compared to the source
> one).
> 4) Use restore(8) to recreate filesystem(s) contents on a target card.
> 5) Unmount filesystems made on a target card.

Will this really be enough?

I'd expect that you'd also need to bring across the bootability
configuration, which - depending on how it's set up on that particular
device - might well require additional steps.

For hard-drive installs you're likely to have a GRUB installation, which
wouldn't be brought across by a measure like this. For a SD-card-based
install I'm not sure, but I'd be a bit surprised to learn that no such
non-filesystem-based configuration is necessary.

-- 
   The Wanderer

The reasonable man adapts himself to the world; the unreasonable one
persists in trying to adapt the world to himself. Therefore all
progress depends on the unreasonable man.         -- George Bernard Shaw

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How do I clone a Debian Distro from a 32Gb Class 10 MicroSD card to a  16Gb Class 10 A1 MicroSD card? Myron <myron@co-hop.uk> - 2021-09-18 13:50 +0200
  Re: How do I clone a Debian Distro from a 32Gb Class 10 MicroSD card  to a 16Gb Class 10 A1 MicroSD card? Reco <recoverym4n@enotuniq.net> - 2021-09-18 14:00 +0200
    Re: How do I clone a Debian Distro from a 32Gb Class 10 MicroSD card  to a 16Gb Class 10 A1 MicroSD card? The Wanderer <wanderer@fastmail.fm> - 2021-09-18 14:10 +0200
      Re: How do I clone a Debian Distro from a 32Gb Class 10 MicroSD card  to a 16Gb Class 10 A1 MicroSD card? Reco <recoverym4n@enotuniq.net> - 2021-09-18 14:40 +0200
        Re: How do I clone a Debian Distro from a 32Gb Class 10 MicroSD card  to a 16Gb Class 10 A1 MicroSD card? The Wanderer <wanderer@fastmail.fm> - 2021-09-18 14:50 +0200
          Re: How do I clone a Debian Distro from a 32Gb Class 10 MicroSD card  to a 16Gb Class 10 A1 MicroSD card? Reco <recoverym4n@enotuniq.net> - 2021-09-18 15:00 +0200
      Re: How do I clone a Debian Distro from a 32Gb Class 10 MicroSD card  to a 16Gb Class 10 A1 MicroSD card? Myron <myron@co-hop.uk> - 2021-09-27 14:50 +0200
    Re: How do I clone a Debian Distro from a 32Gb Class 10 MicroSD card  to a 16Gb Class 10 A1 MicroSD card? Myron <myron@co-hop.uk> - 2021-09-27 14:40 +0200
      Re: How do I clone a Debian Distro from a 32Gb Class 10 MicroSD card  to a 16Gb Class 10 A1 MicroSD card? Reco <recoverym4n@enotuniq.net> - 2021-09-27 16:40 +0200
        Re: How do I clone a Debian Distro from a 32Gb Class 10 MicroSD card  to a 16Gb Class 10 A1 MicroSD card? Myron <myron@co-hop.uk> - 2021-09-30 17:40 +0200
          Re: How do I clone a Debian Distro from a 32Gb Class 10 MicroSD card  to a 16Gb Class 10 A1 MicroSD card? Reco <recoverym4n@enotuniq.net> - 2021-09-30 21:10 +0200
            Re: How do I clone a Debian Distro from a 32Gb Class 10 MicroSD card  to a 16Gb Class 10 A1 MicroSD card? "Andrew M.A. Cater" <amacater@einval.com> - 2021-09-30 21:50 +0200
            Re: How do I clone a Debian Distro from a 32Gb Class 10 MicroSD card  to a 16Gb Class 10 A1 MicroSD card? Andrei POPESCU <andreimpopescu@gmail.com> - 2021-10-01 08:30 +0200
              Re: How do I clone a Debian Distro from a 32Gb Class 10 MicroSD card  to a 16Gb Class 10 A1 MicroSD card? Andrei POPESCU <andreimpopescu@gmail.com> - 2021-10-02 14:10 +0200
          Re: How do I clone a Debian Distro from a 32Gb Class 10 MicroSD card  to a 16Gb Class 10 A1 MicroSD card? Andrei POPESCU <andreimpopescu@gmail.com> - 2021-10-02 08:20 +0200
  Re: How do I clone a Debian Distro from a 32Gb Class 10 MicroSD card  to a 16Gb Class 10 A1 MicroSD card? "Andrew M.A. Cater" <amacater@einval.com> - 2021-09-18 15:40 +0200
  Re: How do I clone a Debian Distro from a 32Gb Class 10 MicroSD card  to a 16Gb Class 10 A1 MicroSD card? David Christensen <dpchrist@holgerdanske.com> - 2021-09-18 21:30 +0200
    Re: How do I clone a Debian Distro from a 32Gb Class 10 MicroSD card  to a 16Gb Class 10 A1 MicroSD card? Myron <myron@co-hop.uk> - 2021-09-27 15:00 +0200
    Re: How do I clone a Debian Distro from a 32Gb Class 10 MicroSD card  to a 16Gb Class 10 A1 MicroSD card? Myron <myron@co-hop.uk> - 2021-09-27 21:30 +0200
  Re: How do I clone a Debian Distro from a 32Gb Class 10 MicroSD card  to a 16Gb Class 10 A1 MicroSD card? Andrei POPESCU <andreimpopescu@gmail.com> - 2021-09-19 07:00 +0200
    Re: How do I clone a Debian Distro from a 32Gb Class 10 MicroSD card  to a 16Gb Class 10 A1 MicroSD card? Myron <myron@co-hop.uk> - 2021-09-27 15:00 +0200

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