Ubuntu安装程序无法检测到Windows 7

USE SOMETHING ELSE OPTION

0. ORIGINAL QUESTION
   First you need to identify if Windows 7 is installed in UEFI or legacy mode. You can easily do this via BIOS settings or from Windows. Run msinfo32.exe from Regedit, which can be opened with Windows + R. Under System Summary you can find BIOS MODE line with exact mode of installation.

   Now you can proceed with installation. Depending on your PC/laptop you need to boot USB as BIOS mode (often named LEGACY mode on newer PCs). Easiest option would be to disable UEFI boot in BIOS settings completely. You will not need it now, and if you ever need it, you can easily enable it again. That option is probably under BOOT section of BIOS settings (or something similar depending on manufacturer. Now when that part is completed, you can proceed with instructions.

1. Choose "Something else" on step 4 of Ubuntu install:

   

2. You will see your disk as /dev/sda,/dev/sdb and /dev/sdc. You said that you want to install it on /dev/sda, so choose that device and press - to delete existing partition on it(/dev/sda1) NOTE: Make sure that you want to delete that partition, and if it contains some important data make a backup. If you want to resize it, use change option and choose new size of /dev/sda1 so you can leave some room for other partitions. Click "New Partition Table..." Now you will see empty space for your Ubuntu installation:

3. Recommended if you are low on RAM Create swap partition, swap is the partition for keeping unneeded memory pages, like Windows swap. Also it can be used for hibernation. Note that swap is much slower compared to RAM, so too much swap can slower you system. Use following table for guidance:

     RAM   No hibernation    With Hibernation  Maximum
     1GB              1GB                 2GB      2GB
     2GB              1GB                 3GB      4GB
     3GB              2GB                 5GB      6GB
     4GB              2GB                 6GB      8GB
     5GB              2GB                 7GB     10GB
     6GB              2GB                 8GB     12GB
     8GB              3GB                11GB     16GB
    12GB              3GB                15GB     24GB
    16GB              4GB                20GB     32GB
    24GB              5GB                29GB     48GB
    32GB              6GB                38GB     64GB
    64GB              8GB                72GB    128GB
   128GB             11GB               139GB    256GB
   256GB             16GB               272GB    512GB
   512GB             23GB               535GB      1TB
     1TB             32GB              1056GB      2TB
     2TB             46GB              2094GB      4TB
     4TB             64GB              4160GB      8TB
     8TB             91GB              8283GB     16TB
   

SOURCE: https://help.ubuntu.com

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

4. Create partition for / (root partition). This is base partition which contains Kernel, system files, program files etc. So like C partition on Windows. You need about 20GiB for this partition, but you put more (if you have space) and if you need more in some time, you can simply extend it via GParted live USB.So:

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

5. Create /home partition. This is the partition for your user's files, like documents, images, song, movies etc. So like Users folder on on Windows.

   You can do this just like in step 4.

6. For advance users You can probably skip this part, but I will still put it here. Create separate /boot, /tmp and /var partitions. For exact sizes of partition use this:

• /boot 100 – 500 MiB
• /var and /tmp should be > 5 GiB or modify these values according to your needs.

After all that, you should see your disk like this:

附注：您还问过关于分开/和/home分区的问题。严格来说，您不需要。这是个人喜好问题，但是拥有一个单独的/home分区可以在升级到新版本的Ubuntu时发生错误的情况下为您提供帮助。在系统升级中总是极少会出现某种错误，这可能会导致数据丢失。

这就对了！您现在可以单击Install Now并开始使用Ubuntu。