Is it possible to upgrade Kubuntu to the 64 bit version without re-installing? I have 8 GB of RAM. I understand that the 32 bit version can only use about 3.
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Re: 64 bit upgrade?
No, sorry. 64-bit is really a "different-grade", not "upgrade", and requires a new installation. Sorry. -
Re: 64 bit upgrade?
You can copy your home directory to a back up and copy it back to your new install. That will preserve all of you personal settings.Comment
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Re: 64 bit upgrade?
This is true in Linux and Windows, but not entirely.I have 8 GB of RAM. I understand that the 32 bit version can only use about 3.
Are you sure that you are not using 8GB RAM.
When you install Kubuntu/Ubuntu it detects the amount of RAM and installs a different kernel (generic-PAE) that can address (if I am not mistaken) up to 8GB.
I am using it on 4GB notebook and that is what happened when I installed it.
There is, also, a registry hack in Windows XP and newer that can unlock PAE (physical address extension).
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Re: 64 bit upgrade?
True, but a PAE kernel can only allocate 3GB to any userspace process - which may or may not meet OP's needs.Originally posted by mimoshwe see things not as they are, but as we are.
-- anais ninComment
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Re: 64 bit upgrade?
The PAE approach is a fairly clunky way to manage memory above 3GB, and there's no good reason today to use it in preference to a 64-bit kernel. Per Linus Torvalds:
https://lkml.org/lkml/2007/11/15/423
http://article.gmane.org/gmane.linux.kernel/900604Comment
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