Sims 4 on a External Hard Drive (crashing or hard drive keeps disconnecting..)

@seashellcats  Does the external SSD disconnect at any other time?  What did you use to try to repair it?

Does this ever happen with no mods present?  Please test if you haven't already; you don't need to save your progress.

Please also run a dxdiag and attach it to a post.  Leave the SSD connected when you run the dxdiag.

https://help.ea.com/en-us/help/pc/how-to-gather-dxdiag-information/

Unfortunately, yes. I haven't used a program to repair it. When I plug it in, it pops up "There's something wrong with your D: drive" or something. Windows made a option to repair it and it pops up, "No errors were found". I even tried without the mods and it doesn't crash. 

@seashellcats  I'd still like to know the exact error that happen when you plug in the drive.  And if it doesn't disconnect on its own, you're ejecting it in Windows before removing it, right?  I just want to make sure since that would be an easy "problem" to address.

Your dxdiag shows that your computer's page file is large and almost all used, which suggests that you have a lot of apps running in the background.  (The page file holds spillover data that would normally go in RAM but doesn't fit.)  So I'd suggest opening the Task Manager's Startup tab and disabling anything that you don't absolutely need running at startup.  For example, Edge might be starting with Windows, and some HP software, and Discord or some other random app that you use a lot but not all the time.  Disabling the apps at startup doesn't mean they can't open, only that they won't do so automatically.

If you're not sure what you're looking at, feel free to post a screenshot of the Startup tab.  Please also see how much RAM your system is using overall after a restart, after waiting five minutes with nothing except the Task Manager open.  With only 8 GB installed and 6 GB usable (the rest is set aside for the iGPU), your system needs as much memory available as possible to run Sims 4 and other demanding tasks.

Honestly, when I removed the hard drive I didn't eject it at first. So disabling my apps in the background will free up more ram? Usually I don't use that much apps. Should I eject it first and then remove it? 

Is it too late? I’ve already have the sims on my SSD drive… Will it lose all my data and files if I eject it? 

@seashellcats  Ejecting the disc doesn't delete your data.  It's simply the term for telling the system to disconnect from and power down the drive safely, in software, so you can then physically disconnect it without risking damaging the files or the drive.

I don't think you've necessarily done any damage yet; damage to the drive itself is more of a long-term risk, and if your Sims 4 install is damaged, you can always repair or reinstall.  Just be sure to eject the drive every time from now on.

Okay I’ll do that! Thanks for your help! 

Did it work? How did you get it to stop disconnecting on its own?

@bbyriri  Make sure the drive's cable is securely fastened, it's not loose in its port, and that you don't jostle the drive as you use it.  It's also important to eject the drive in software before disconnecting it, each and every time.

Having said that, if the drive is disconnecting on its own, the problem might be the drive itself, or the port.  I'd suggest testing with a different external drive to see whether the problem still occurs.