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Thread: "Upgrade" from 32 to 64 bit Karmic

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  1. #1
    Join Date
    Oct 2005
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    Bordeaux, France
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    93
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    Ubuntu Studio 12.04 Precise Pangolin

    Question "Upgrade" from 32 to 64 bit Karmic

    I've searched and read a few things about "upgrading" to 64 bits, and it seems that the only solution is to make a clean install.

    I have /home on a different partition, so it's ok for my personal files.

    Which other parts of my systems should I backup in order not to loose any data ? I've seen that apache and sql have some data in /var, so I think I should backup this one... and of course /etc too...

    And anyway... once I have installed the "new" 64 bit system, will the files from the "old" /etc and /var be compatibles with the 64 bit system ?

  2. #2
    Join Date
    Feb 2008
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    New York, NY
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    73
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    Ubuntu 10.04 Lucid Lynx

    Re: "Upgrade" from 32 to 64 bit Karmic

    Don't know what sql you have, but for PostgreSQL the database cluster is not compatible between 64-bit and 32-bit installs.

    So for Postgres at least you would have to backup the database using Postgres' own tools (pg_dump or pg_dumpall), upgrade Ubuntu to 64 bit, install 64 bit Postgres, then restore the database (pg_restore).

  3. #3
    Join Date
    Oct 2005
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    Bordeaux, France
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    93
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    Ubuntu Studio 12.04 Precise Pangolin

    Re: "Upgrade" from 32 to 64 bit Karmic

    No it's not postgress... only mysql-server-5.1
    Are the databases 32/64 bit compatibles ?

  4. #4

    Re: "Upgrade" from 32 to 64 bit Karmic

    I've searched and read a few things about "upgrading" to 64 bits, and it seems that the only solution is to make a clean install.
    That is correct. A clean install is the only way to "upgrade" to 64-bit from 32-bit.
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  5. #5
    Join Date
    Oct 2005
    Location
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    93
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    Ubuntu Studio 12.04 Precise Pangolin

    Re: "Upgrade" from 32 to 64 bit Karmic

    I found the answer about the sql database compatibility here :

    http://dev.mysql.com/doc/refman/5.0/...databases.html

    It says :

    You can copy the .frm, .MYI, and .MYD files for MyISAM tables between different architectures that support the same floating-point format. (MySQL takes care of any byte-swapping issues.)
    So i did my "upgrade" : install of the 64 bit version on a new partition, then copy the different files I needed from the "old" partition to the new installation (sql, ssh, apache config, etc..).

    And everything seems OK Great !

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