Linux install in one partition

• Select free space and click +
• Set parameters like on the picture below:

10 – 20 GiB should be enough

• /boot should be 100 – 500 MiB
• /var and /tmp should be > 5 GiB

• If you use only one hard disk, select or leave /dev/sda intact.
• If you use more than one hard disk with no RAID, select the one from which your system does boot. You can also select other disk and set BIOS to boot from it.
• If you have RAID from which your system starts, it will be /dev/mapper/.

Be sure that you select entire disk, not a single partition!

After all, you should see your disk like this:

As LiveWireBT noticed in comments, it is recommended to place root partition onto primary partition on MBR scheme disks. However, it belongs to personal taste. Sometimes it’s even better to put /boot directory on primary and leave root on logical partition.

That’s all! You can now click Install Now and proceed to the installation.

@zkent if you want to use NTFS or FAT32 as your /home , you should make small Ext2/3/4 partition and create some symlinks on it pointing to the corresponding directories on the partition you want to share. You can’t just place such important parts of the system like /home on filesystems that are not designed for them.

I just noticed that root is a logical partition, shouldn’t these instructions recommend that root is on a primary partition on MBR scheme disks?

Regarding point 7. Is it mandatory for UEFI based machines to have EFI boot partition created (200MB)?

Just want to reiterate and confirm @VPR’s comment regarding the EFI partition; it was needed in my install and didn’t work without it.

If you have disk that contains Windows installed

1. Boot from Ubuntu Installation media.
2. Unmount any mounted drives if they exist.
3. Proceed to Step 4. Choose «Something else» and click Continue :

You will see partition table. It will look like this:

1. Free some space for Ubuntu:
   • Select the Windows drive (not the loader!). It should be the biggest drive in the map.
   • Click Change. button. Reduce Windows’ partition to 60% of it’s size. Notice that you should remain some free space on it (8 – 20 GiB should be enough).
   • If you want, you can delete some partitions. This is done by clicking — button. Do not delete Windows partition!

And ~40 GiB should be kept for Ubuntu. Click OK and Continue to write changes on disk.

1. Now, you can proceed with steps 4 – 7 of part about blank installation. Notice that swap will be placed on logical partition. This doesn’t matter, in any case it will work perfect.

I have experienced difficulties after shrinking a Windows partition using tools on the Linux side. It may be safer to shrink the Windows partition using Windows tools before beginning the install. Ref: askubuntu.com/questions/511459/…

If you have Logical Disk Manager (LDM) Partition, the partition size shows as «unknown» and you can’t resize it. The solution is to do it from inside Windows itself first: askubuntu.com/a/976430/52975

For installing Ubuntu in dual boot mode I used this link. My computer already had windows 7 and Windows 10 and I was trying to install Ubuntu in an unallocated 100 GB space. The instructions worked very smooth for me. Specially the screen-shots while doing the partitioning was really crucial.

@Danatela if i want to remove windows completely from my computer, should i delete windows partition.

@FatemehKarimi yep, it’s recommended but not mandatory. Often people have significant amount of data on their windows partition, moving it on linux filesystems has pros and cons.

If you have a OEM-preinstalled copy of Windows 8 or later

Computers with OEM installs of Windows usually come with more than 1 or 2 partitions. Starting with Windows 8 the partition table should be GPT, allowing for more than 4 primary partitions.

1. Resizing the Windows partition

There are at least 2 ways doing this:

A. Resizing from Ubuntu live media

You can run GParted or use only the manual partitioning menu of the installer.

B. The safer option: Resizing from within Windows

• Resize the Windows partition with Disk Management (run diskmgmt.msc ).
• Optionally disable fast startup and probably disable hibernation, if it is activated and you intend to access the Windows partition with Ubuntu. Run powercfg.cpl and navigate to Power Options >System Settings through «Choose what the power button does».

2. Manually setting up the partition layout for Ubuntu

• Attention! No, you don’t want to erase the entire disk and Windows along with it. Choose the Something else option if you see this screen. (Something else may be the most difficult option to understand, but considering existing bugs you know what you will get.)
• You will get to the manual partitioning menu, where you should at least create a root partition ( / ) and a swap partition.
  • Option 1: add only a root partition
  • Option 2: add a root and home partition

  …finally add the swap partition:

  

  Note that there usually is an existing EFI System Partition (short ESP, efi in the screenshot), that the installer will automatically detect and mount to install EFI loaders and programs.

  

  Related bug reports

  • My answer to SU question: Clean install Windows 8.1 or Windows 8 from OEM key (now updated with info for Windows 10)
  • Adding an encrypted partition with pam_mount during login (1, 2)

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  Installing linux mint in one partition

  

  So, I have a disk with a MBR setup(image below). I’ve managed to have 50 GB unallocated space for intalling Linux Mint 14 . And I want to keep the current windows OS too(but don’t want the Mint inside windows). Now I’ve seen in some tutorials that Linux Mint needs several partitions for bootloader , swap , & home . I don’t like to have so many partitions & maybe MBR stuff won’t let me create more than one now. So, is it possible to install Linux Mint in one partition only? If it is really impossible than what’s the minimum number? & how can I accomplish that? Thanks in advance.

  2 Answers 2

  You can simply create a root / partition in your free space when you install Mint then, and avoid creating any other partition (you can decide this during the Linux installation process).

  If you have enough RAM memory, you can skip creating a swap partition entirely. If you don’t want a separate /home partition, you will simply have your home folder inside the root partition.

  I’ve 4 GB RAM. Is it enough? And I should use / as mount point in that partition & partition for mount point /boot is NOT needed, right?

  Please see this image: linuxbsdos.com/wp-content/uploads/2012/06/… I’ll only create one partition, set its Mount point as / and select that partition for Device for boot loader installation right?

  It always depends on how you want to use your machine. For example, if you want to be able to hibernate, you need a swap partition of at least the size of your RAM. You can also decide not to use it entirely, although it is often suggested to have some. And yes for your second question, if I understand correctly.

  Wait a second, how did you end up with that image? Suggestion: always make a full system backup before messing up with the partitions!

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