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I have dual booted my Acer aspire one d257 which has an Intel atom n570 1gb of ram net book with windows 8 and Ubuntu 13.04. Which operating system shall I upgrade my PC to the 32 bit or 64bit, my laptop came with 32 bit but what confuses me is that it is on the download page If you have a PC with the Windows 8 logo or UEFI firmware, choose the 64-bit download. The thing is that my PC is 64 bit capable. Which operating system should I choose. Please list your answer with reasons why. my laptop came with 32-bit and has 32 bit windows 8. luckily, my laptop processor is 64bit based.

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UEFI firmware is a more modern alternative to the BIOS used in older computers. Windows 8 computers require UEFI because it uses something called secure boot. This means that only programs signed by Microsoft can run during boot up.

This adds special requirements needed to install another OS on the machine. Ubuntu steamlines this in the x64 iso of Ubuntu since every UEFI computer happens to have a 64-bit processor in it.

If your processor supports 64 bit, your computer will run more efficiently using 64bit code. You should choose Ubuntu64

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Thank youmy processor is 64 bit capable – Apad121 Apr 25 '13 at 16:25

It is written on the Ubuntu download page, because either windows 8 logo or the UEFI capability indicates, that the certain computer is a 64-bit hardware architecture (amd64). Every newer system, built in the last few years are 64-bit, and gaining advantages of the 64-bit hardware (over a 32-bit hardware) is only possible with a 64-bit operating system. You can still use the 32-bit version of Ubuntu, but it doesn't have any advantages on 64-bit hardware, it's maintained for older, 32-bit (x86) computers and special cases. Use the 64-bit release, unless you have any particular reason to do otherwise.

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thanks for the advice – Apad121 May 19 '13 at 10:55

Currently, the Ubuntu download page proposes the 32bit image by default. However, the 32bit image is not compatible with UEFI computers. The 64bit image is. Windows8 computers are all UEFI computers.

If your computer (indeed processor) is 64bit, then you should use the 64bit image of Ubuntu.

More information at

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are you sure that i am not able to use the 32bit version. – Apad121 May 19 '13 at 10:55
Yes. Ubuntu 32bit is not compatible with UEFI, so if you install it, you won't be able to get a clean dual-boot with Windows8. – LovinBuntu May 20 '13 at 0:15

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