试图用Windows 7双启动kubuntu

选择“手动”选项后，您应该能够继续前进，方法是单击“下一步”，这将打开一个UI来进行您自己的磁盘格式化。

到达那里后，您应该能够在“可用空间”中创建新分区。

If you can get that far, you have to decide how you want to partition the disk. Personally I use the following scheme which contains 4 separate partitions (ESP, /, swap, /home), but it really depends on how flexible you want to be. Note that this is for EFI machines, hence the ESP partition. If you have a BIOS machine, you can use a normal /boot partition which you can find tons of info about on the web:

Partition 1 - ESP: This is the EFI System Partition which holds the boot loader as well as any other bootup related files. It should be in a FAT format (I use FAT32). Look up what the recommended size should be for Kubuntu as I am not familiar.

Partition 2 - /: This is the root partition and should be mounted at the / directory. It is common to use the ext4 as the file system for this partition. This partition is the root of all other directories and will contain all of the OS files that are initially installed on your system as well as additional packages and applications you add later on. The size of this is up to you, but it is easy to find recommended sizes for your given OS. For example, my XFCE Debian system recommends 10GB.

Partition 3 - swap: This is the swap partition and is used when the system is out of use-able RAM. Initially it was common to make this partition 2x the amount of RAM you have, so if you have 2GB of RAM, make this partition 4GB. As RAM size goes up though, it becomes overkill to double it. On my system with 8GB of RAM, I use an 8GB swap space which should be plenty. You can find tons of info on recommended swap size on the web.

Partition 4 - /home: This is the home partition and should be mounted at /home. It can be used to hold all of the additional files you want to store (Photos, Docs, etc). It is common to use the ext4 as the file system for this partition. The size is really up to you. You can always shrink/grow any of these in the future, so dont go crazy deciding on sizes.

请注意，我上面提到的分区方案完全是可选的。可以有一个/分区，然后将所有内容放在那里。我个人不喜欢，因为如果您想与其他OS重新安装或共享/ home目录，则将它放在自己的分区上会非常简单。

您还可以朝另一个方向发展，并为/ usr，/ var等创建更多分区。在这里，我将不讨论为什么或不应该这样做。

如果使用“引导”选项，则它似乎将尝试格式化和使用整个磁盘，如果要保留Windows安装，这不是您想要的。