Switching to AMD64

[John Richard Moser]

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Jack Bertram wrote:
> * Tollef Fog Heen <tfheen at canonical.com> [050131 13:40]:
> 
>>* Jack Bertram 
>>
>>| - what commands to run to upgrade from i686 to AMD64 in a working hoary
>>|   install
>>
>>You don't.  (Unless you are crazy.  Which means it's possible, but if
>>it breaks, you get to keep all the parts.)
> 
> 
> I'm not crazy.
> 
> 
>>| - what might break if I do so
>>
>>Everything.  More or less. ;)
> 
> 
> Fair enough...
> 
> 
>>| Can anyone point me to some links?
>>
>>Reinstall is the simple solution unless you want to get intimately
>>familiar with how shared libraries, the kernel and the dynamic linker
>>works.  (If you do want to do that: install a 64bit-capable kernel,
>>move /lib to /lib32; symlink it back (keep a sash while doing this),
>>then reinstall all your packages, possibly with a bit of
>>--force-architecture.)
> 
> 
> Ok, sounds like I need a new partition to experiment with this.  Thanks.
> 

Here's a hint.

swap - 1G
/ - 4G
/home - 30G

erase / and reinstall.
erase / and reinstall.
erase / and reinstall.
erase / and reinstall.
erase / and reinstall.
ad infinitum

If you keep /home and / separated, it becomes trivial to wipe / and
reinstall.  (I collapse /boot onto /, and keep swap at the beginning, as
that's the fastest access area.)

Grow / to taste/need and keep just the system on it.  If you want 2
installed at once, you can have two /'s, one for x86 and one for amd64.  :)

Partitioning is an art and a science.  I've figured out a lot of the
science part.  :)

> jack
> 

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