Lenovo Thinkpad T420
This installation assumes (For now) that the install is starting from an MS-Windows installation. If you are not on Windows, please add your favourite choice of steps, keep the emphasis on ease of understand.
You'll want to get yourself running off a LiveCD or LiveUSB to start. This guide will assume liveUSB, since some users find them more difficult to prepare, this is usually due to boot flag issues. (Note: Live USB restore drives are nice to have in general! The author keeps one in his college binder.
We can use LiLi for this, it provides a nice, simple interface and is fairly reliable: LiLi Download
Grab the version that Suites your needs here: Sysrescue Download Next use LiLi (Or whatever you happen to be using) to flash the image or burn your CD. Reboot, change your boot device, and you'll find yourself at a grub menu.
Since the T series are all 64-bit laptops, make sure to boot the 64-bit kernel, as the default is 32-bit. But Why?: If we pick 32-bit, later on we won't be able to chroot into our Funtoo's 64-bit stage 3. You should see a fairly verbose boot as sysrescueCD scans for modules it requires and starts up. It is safe to simply accept prompt defaults here, unless they are errors. When you are greeted by the interactive command prompt, enter 'wizard' as prompted, and accept the default entry in the dialogue. This will give us a functioning XFCE desktop environment.
Partitioning is the only step of this install which provides real risk to data on other operating systems. Be extremely careful if there is something you do not wish to loose. These steps are not foolproof and may result in lost data.
Please be aware that MBR disks only support 4 primary partitions. You can solve this by creating an 'extended' partition and adding logical partitions to it. If you are feeling particularly brave try GPT on your disk.
So lets start: First open up gparted. You should see it on the taskbar if you're using systemrescueCD. It will scan available drives and show you the partition table. Most users will likely find one of the following to their liking:
You'll likely want:
/boot :: EXT2 :: 100mb-500mb ''Note: We choose EXT2 because there is really no good use for a journalled boot partition, but feel free to use EXT4 instead!'' / :: EXT4 :: 60gb (suggested floor value) - 500+ swap :: linux-swap :: Your Ram Value ''Note: Only necessary if you plan to hibernate your machine ever. If not don't bother. Unless you have 2GB of ram, then consider it, but it'll be rare to use up 4GB or more of ram normally.''
You may wish for a separate /home, which is perfectly legitimate, of any number of other partitions.
Dual Boot with Windows
If dual booting with Windows, it is advisable to have Windows installed first since it will muck with the MBR and possibly want to create it's own boot partition.