Hard drive issue.....no space?

It’s a hard drive, nonetheless. I imagine it too may be subject to accumulating junk files, registry errors and other miscellaneous problems that can possibly consume space. I recommend downloading the free version of Advanced System Care and allow it to scan your hard drive. You may not receive the exact improvements that you want, but you’ll certainly benefit from the software fixing whatever problems it identifies.

I suspect it may be as you stated “some installers”.
It is more than likely that softwares way of saying to not install on an external drive.
It is not good practice to install your application on an external disk.

I have a habit of not playing nice with my external hard drives, so this happens to me occasionally – the drive is full of deleted files that are not really gone. To fix it, I usually boot into Linux, which will show the deleted files. Then I delete them for good. I’m sure there are other ways to do this, but this is the fastest one for me.

@glacial That’s one of the things Advanced System Care identifies. Whatever method is selected, it seems apparent hard drive cleaning is required.

@SABOTEUR True, but my method doesn’t require installing yet more software, since I have dual-boot machines. But agreed, the point is to be able to get at those not-quite-trashed files.

In my opinion installing applications to an external drive is asking for trouble. Too much can go wrong with an external drive.
Putting data out there on an external drive is another story. But whatever you put on an external drive back it up diligently.