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Windows 10 build: 1909

Fedora version: 31, all recent updates from DNF

Virtualbox version: 6.0.14 (This is not quick to update, so please confirm that this is actually a problem before suggesting I update it)

Here is what I have tried and checked so far:

  • Confirmed my user is in the vboxsf group
  • vboxsf(along with vboxguest and vboxvideo) shows up in lsmod
  • vboxadd-service.service and vbox.service show up in systemctl The .service.service is running, the other is exited.
  • I tried removing and adding the shared folders in virtualbox's menu. Currently, the setup is: Folder path is my C drive, name is C_DRIVE, Auto-mount and Make Permanent are both set.
  • If I remove the folders and restart my virtual machine, virtualbox re-creates them
  • Checked the permissions. They were set to read-write-execute for both user and group, nothing for other.
  • When I open the shared folder in Linux and search with ls -a it is empty, and when I try to make a soft link to something that should be inside it (something on the C drive) it fails when I attempt to use it, saying it does not exist. (Reflecting that it is empty)
  • I uninstalled the virtualbox-guest-additions package (since it apparently causes issues), re-started, and then re-installed the guest additions via the "CD" it provides.

Why isn't it working?

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It was, in fact, Virtualbox. I updated to 6.1.4 and it's been fixed.

However, to install Guest Additions 6.1.4, I had to do:

sudo dnf -y install gcc automake make kernel-headers dkms bzip2 libxcrypt-compat kernel-devel perl

Because it turns out I was missing a few of those, and it would silently fail to install properly without it.

Also had to do:

KERN_DIR=/usr/src/kernels/`uname -r` export KERN_DIR

Though copy/paste still doesn't work.

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    Copy & paste is broken in the Guest Additions 6.1.4-136177, see Copy paste not working on Virtual box 6.1 running Ubuntu 18.04 on Windows 10 Machine. Commented Mar 19, 2020 at 19:30
  • Thank you Freddy! Once they do fix it, will there be any way to fix it without reinstalling VirtualBox? As far as I understand, you cannot have both the "CD" installation and the one you get from DNF, right? Commented Mar 19, 2020 at 21:06
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    Others have fixed it by installing the test build of the 6.1.5 Guest Additions from virtualbox.org/wiki/Testbuilds. Commented Mar 19, 2020 at 21:17
  • That's all of virtualbox, so I'll take that as a no. Installing anything is a little tedious right now (unless it's portable/1 user only) so I guess I'll just wait. I'll keep it in mind, though, thank you. Is there also a known bug with a massive cursor in the guest? Darn, I picked a bad time to update. Commented Mar 19, 2020 at 22:07

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