I am not looking for detailed instructions, for now I just want to hear what's your summarized strategy for this kind of project.
I have about 25% of space left in the system file. So I am thinking of setting up most of my apps on a 2nd drive. Should I use a software center, a package manager, etc, to simplify the process? If so, which one do you recommend? If your approach doesn't use software centers nor package managers that's fine, I'm still curious to hear about it.
Btw, I am using Pop! OS

This is what Copilot advised, what do you think?:

"Setting up apps on a second drive in Pop!_OS can be managed in several ways, depending on your preferences and comfort level with different tools. Here are a few approaches you can consider:

### Using Software Centers
**GNOME Software** is a user-friendly option that integrates well with Pop!_OS. It allows you to manage Flatpak and Snap applications easily. You can configure it to install apps on a secondary drive by setting up the appropriate Flatpak or Snap installations.

### Using Package Managers
**Flatpak** and **Snap** are great for managing applications on a secondary drive. Here's how you can set them up:

#### Flatpak
1. **Create a new installation**:

sudo mkdir -p /etc/flatpak/installations.d
sudoedit /etc/flatpak/installations.d/extra.conf
```
2. **Add the following content to the file**:
```ini
[Installation "extra"]
Path=/path/to/your/second/drive/flatpak
DisplayName=Extra Installation
StorageType=harddisk
```
Replace `/path/to/your/second/drive/flatpak` with the actual path to your second drive.

3. **Install apps to the new installation**:

flatpak --installation=extra install flathub org.gimp.GIMP
```

#### Snap
1. **Configure Snap to use a different directory**:

sudo snap set system refresh.retain=2
sudo mkdir /path/to/your/second/drive/snap
sudo mount --bind /path/to/your/second/drive/snap /var/lib/snapd/snaps
```

### Using Symlinks
For applications installed via traditional package managers like `apt`, you can use symbolic links to move specific directories to your second drive:

1. **Move the directory**:

sudo mv /path/to/application /path/to/your/second/drive/application
```
2. **Create a symlink**:

sudo ln -s /path/to/your/second/drive/application /path/to/application
```

### Recommendations
- **For ease of use**: GNOME Software with Flatpak or Snap integration.
- **For flexibility and control**: Directly using Flatpak or Snap with custom installations.
- **For specific applications**: Symlinks can be useful for moving individual applications or directories.

Would you like more detailed instructions on any of these methods?

Source: Conversation with Copilot, 10/18/2024
(1) Installing apps to a different drive : r/pop_os - Reddit. https://www.reddit.com/r/pop_os/comm...fferent_drive/.
(2) Install programs on secondary drive : r/pop_os - Reddit. https://www.reddit.com/r/pop_os/comm...condary_drive/.
(3) Dual boot Pop!OS + Windows 10/11 (very easy) · GitHub. https://gist.github.com/subrezon/b04...61eebb2e17ebd8.
(4) How to Seamlessly Install Google Drive on Pop!_OS Desktop. https://thelinuxcode.com/install-goo...ive-on-pop_os/.
(5) How To Dual Boot Windows And Pop!_OS - OSTechNix. https://ostechnix.com/dual-boot-windows-and-pop-os/."