Ubuntu

Change to 64 bits

Asked by Waluyo Adi Siswanto

One of computers in my office run Ubuntu 9.04, and actually the processor is Intel 64bits.
When I check (uname -a) in the terminal it indicates that the Ubuntu is 32bits , i686 GNU/Linux.

I am going to change to the proper OS 64bits. I have already have Ubuntu 9.10 64 (AMD64).
How can I uninstall the previous one (32b) and install the new one (64b).

Thanks

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Lars J. Nielsen (ebidk) said : 		#1

First of all, you probably can't use the amd64 version on an Intel CPU.

As for your question, I don't know if there's an easier way but otherwise you'd backup everything you want to save, maybe to a partition that you won't be formating in the new installation, and then installing the 64 bit version like normal, just remember not to format the partition you put your backup on. A good suggestion for a place to put the backup would be your home folder because you won't need to delete that.

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wojox (wojox) said : 		#2

You can use amd64 on Intel 64bit.

Run this in a terminal:

sudo dpkg –get-selections > myPackages

It will create a file called myPackages in you user directory. Keep this on a cd or flash drive for safe keeping. Then run:

sudo dpkg –set-selections < myPackages && sudo apt-get dselect-upgrade

To reinstall it all.

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wojox (wojox) said : 		#3

Sorry that should have been:

You can use amd64 on Intel 64bit.

Run this in a terminal:

sudo dpkg --get-selections > myPackages

It will create a file called myPackages in you user directory. Keep this on a cd or flash drive for safe keeping. Then run:

sudo dpkg --set-selections < myPackages && sudo apt-get dselect-upgrade

Copy that to your home folder now to reinstall it all.

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