How to free space on a drive to make room for Slint.

Slint can be installed if enough space has been made available at the end of
a drive, if it has a GPT partition table and the machine has booted in EFI mode.

A) In Windows 8.1 or 10
From:
https://docs.microsoft.com/en-us/windows-server/storage/disk-management/shrink-a-basic-volume

If you want or need to use the command line, follow these steps:

1) Open a command prompt and type:
   diskpart
2) At the diskpart prompt, type list volume.
   Note the number of the simple volume you want to shrink.
3) Select the volume you want to shrink, which should have a ntfs
   file system, by typing
   select volume <number>
3) to know the maximum size of which the volume can be shrunk
   type:
   shrink querymax
4) Define the <size> in megabytes of the free space you want to create.
   It should not be greater than the maximum size found with the
   previous command. You may want to leave some space available on the
   Windows volume to be able to store more data in it.
5) Type this command:
   shrink desired=<size>
   size is a number in MB, for instance for 30 MB type:
   shrink desired=30

Keep enough unused space on the System volume to allow installing a Windows
Update (32 gigabytes?)


Alternatively you can use the Disk Manager: select the volume you want to
shrink, right click on it, select "shrink the volume", wait until the maximum
space of which the volume can be shrunk be displayed, adapt the value to leave
some space to allow storing more data there as you see fit, then click the
shrink button.

B) From Linux

The installer can shrink the last partition of a drive if it has been formatted
with an ext file system. In other cases you will have to shrink it before
beginning the installation, or install Slint on a dedicated drive.