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Thread: upgrading/re-installing, 64 vs. 32 bit programs/os

  1. #1
    Join Date
    Sep 2011
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    6

    upgrading/re-installing, 64 vs. 32 bit programs/os

    [ Ubuntu 12.04.4 LTS 32 bit (currently upgrading to 12.10)... ]
    [ 64 bit Athlon w/ "lm" flags, 2.8gig total memory ]

    right to the questions:
    can 32bit 12.04.4 upgrade to a 64 bit Ubuntu - or does the 64 bit distribution need to go in "fresh"?
    is there is a package(s) to add 32bit<->64 bit virtualization(?) with apt-get? perhaps getting lib32 somehow...
    is virtualization the right word?

    background:
    I do not understand the interoperability of 64 and 32 bit programs with the same of the operating system. It appears there are virtualizations (that I could ask about in another thread ), but I wonder if I just upgrade it will just work without effort on my part. I read this:
    https://help.ubuntu.com/community/32bit_and_64bit

    this was the best I found for leads how to run 32 and 64 bit os/program interchangably:
    http://askubuntu.com/questions/29715...-64-bit-system

  2. #2
    Join Date
    Jun 2008
    Location
    Tennessee
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    3,415

    Re: upgrading/re-installing, 64 vs. 32 bit programs/os

    You can't "upgrade" from 32 bit to 64 bit. It has to be a fresh install.

    You can run 32bit applications on a 64bit install if you enable "multiarch" (which I believe is enabled by default). You have to install some 32bit libraries, but this is usually taken care of by the package manager.

    I don't think there is a way to run 64 bit applications on 32 bit.

  3. #3
    Join Date
    Aug 2011
    Location
    52° N 6° E
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    2,205
    Distro
    Xubuntu 14.04 Trusty Tahr

    Re: upgrading/re-installing, 64 vs. 32 bit programs/os

    To go from 32 to 64 bit you have to do a fresh install. With 2.8GB ram it doesn't matter too much whether you use 32 bit or 64 bit. 64 bit may be a bit faster, 32 bit can do a little more with the memory you've got.

    12.10 is a dead end. It's almost end of life and its successor is end of life already (after 12.10 the support term for intermediate releases was shortened from 18 to 9 months). Users of 12.04 can best stay with 12.04 until they can upgrade/move on to 14.04.

  4. #4
    Join Date
    Sep 2011
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    6

    Re: upgrading/re-installing, 64 vs. 32 bit programs/os

    that's what I needed, thanks!

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