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When I run Wubi, that is, the Windows installer for Ubuntu 12.04 LTS, I'm given a pull-down menu in the download dialog-box. It offers, pre-set, an Installation Size of 18 GB, although one can pull down the menu and choose, it seems, anywhere from 5 GB to 30 GB. Which size should I choose?

And why isn't this feature mentioned in the download instructions that are linked to from the download page? I must admit, I am miffed by this apparent omission.

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don't use wubi,it had lot of bugs. – Avinash Raj Nov 27 '13 at 2:59
Wubi Is old and outdated! Use the regular installation! – samgabbay Nov 27 '13 at 16:34

WUBI is an abandoned project and is not compatible with UEFI. It is also just for try ubuntu, not really for a long term usage, if you want to use Ubuntu on a long term i recomend you to make a partition for it.

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Wubi makes a file that acts like a drive when you boot ubuntu. So instead of making a new partition to put your os on , you choose the size of your "drive" in the "Installation Size" dropdown menu!

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Thank you! May I ask if I should keep it at 18 GB? (I've got a small laptop--1 GB RAM, Windows 7 Starter (32 bit)--it's an Acer Aspire One "netbook." There's about 195 GB on the hard drive.) – user216229 Nov 26 '13 at 23:10

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