I used ubuntu in my previous laptop for some years now. I installed it via wubi. Recently I bought a new laptop and I want to do the same thing. Although I used ubuntu almost exclussively, for some reason I DON'T want to make a partition in my new laptop. I only want to install it like I did in my previous one. So, I installed it in my previous laptop about three or four years ago (it was ubuntu 12.04 back then or maybe an older version). I remember that I dowloaded a small .exe from the ubuntu page (about 2mb if I remember correctly). When I ran it, a window opened and asked me how much space do I want to dedicate to ubuntu, my user name and a password. Now I cannot find it anywhere. I downloaded the 14.04.2 version from here: http://www.ubuntu.com/download/desktop and I created a virtual cd with deamon. I found the wubi.exe in that and I executed it, but it says that I should restart my computer. It is not like the previous time that it installed ubuntu inside windows. Should I do it? Is it the same, or it will do a partition? I found an older version of wubi somewhere (for 9.04). If I use that one, will I be able to update later to 14.04 from inside ubuntu? I forgot to mention that my new computer (as my previous one) runs windows7 and not 8 (I know that wubi doesn't work with win8). Thank you very much!
Wubi is depreciated. The main function of wubi shipped in 14.04+ is to be a "cd autolauncher" that says "You needto reboot, to try ubuntu!" or something. But when you copy the wubi.exe off the cd, it will launch and offer Wubi based installation on BIOS machine (there is no guarantee with UEFI devices).
In addition, from Wubi Guide:
Wubi is an officially supported installer for Windows XP, Vista and 7 only. Wubi does not work with Windows 8 default boot-loader. Thus at this point Wubi would not work on a new Windows 8 machine. You would be able to install, but not reboot into Ubuntu.
If you upgraded to Windows 8 and are using BIOS firmware, Wubi does work, but do not enable hybrid-sleep on Windows 8.
Note that this applies to Windows 10 also.
To install Ubuntu, burn the iso to a DVD/USB and install from it.