I have Centos 7 running as guest on macOS 15.5 Catalina host under VirtualBox 6.1.10.
It runs without problems, but, I cannot mount the Guest Additions disk and not access the shared folder as a regular user within the VM.
I removed, rebooted the VM, and added it again and rebooted the VM but the error persitsts.
Unable to insert the virtual optical disk /Applications/VirtualBox.app/Contents/MacOS/VBoxGuestAdditions.iso into the machine VM-Centos.
Result Code: NS_ERROR_FAILURE (0x80004005)
Component: ConsoleWrap
Interface: IConsole {872da645-4a9b-1727-bee2-5585105b9eed}
Callee: IMachine {85632c68-b5bb-4316-a900-5eb28d3413df}
And the file does exist.
ls -al /Applications/VirtualBox.app/Contents/MacOS/VBoxGuestAdditions.iso
-rw-r--r--@ 1 root admin 60448768 Jun 4 19:22 /Applications/VirtualBox.app/Contents/MacOS/VBoxGuestAdditions.iso
Another issue is that inside the VM, a regular user cannot access the shared folder, maybe it has to do with the guest additions issue which I cannot intsall.
Within the VM (as root):
ls -al /media
total 0
drwxr-xr-x. 3 root root 26 Jul 10 12:48 .
dr-xr-xr-x. 17 root root 237 Jun 11 10:34 ..
drwxrwx---. 1 root vboxsf 1344 Jul 10 13:28 sf_Downloads
I have added the user to the group vboxsf and when I login as user in the VM, it issues 'Permission denied' when I try to access a file for read in sd_Downloads.
But when I login as root within the VM I can access the shared folder.
The sf_Downloads folder is the shared folder om macOS /Users/user/Downloads.
Cannot mount Guest additions disk image
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- Posts: 27
- Joined: 10. Nov 2018, 14:04
Re: Cannot mount Guest additions disk image
Does really nobody know ?
I stumbled upon the same issue with another new (Ubuntu) VM, using the same host folder as the other one where it does work.
When I call 'mount' on the guest I see the line showing the line containing the shared folder :
On the guest 1 (where user 'klaas' can access the shared folder)
while on the guest 2 (where user 'klaas' can NOT access the shared folder)
The only difference is 'tag=VBoxAutomounter' which I cannot control of.
Both VBox files contain the same line :
On both guests I have done:
So this is completely weird.
I stumbled upon the same issue with another new (Ubuntu) VM, using the same host folder as the other one where it does work.
When I call 'mount' on the guest I see the line showing the line containing the shared folder :
On the guest 1 (where user 'klaas' can access the shared folder)
Code: Select all
klaas on /media/sf_klaas type vboxsf (rw,nodev,relatime,ttl=0,iocharset=utf8,uid=0,gid=125,dmode=0770,fmode=0770)
Code: Select all
klaas on /media/sf_klaas type vboxsf (rw,nodev,relatime,iocharset=utf8,uid=0,gid=998,dmode=0770,fmode=0770,tag=VBoxAutomounter)
Both VBox files contain the same line :
Code: Select all
<SharedFolders>
<SharedFolder name="klaas" hostPath="/Users/klaas" writable="true" autoMount="true"/>
</SharedFolders>
Code: Select all
sudo usermod -a -G vboxsf klaas
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- Site Moderator
- Posts: 20965
- Joined: 30. Dec 2009, 20:14
- Primary OS: MS Windows 10
- VBox Version: PUEL
- Guest OSses: Windows, Linux
Re: Cannot mount Guest additions disk image
It appears this one got missed.
The shared folders set by Virtualbox require that the Guest Additions be installed in the guest OS. So you won't be able to use Virtualbox-arranged shared folders until you are able to get the Guest Additions installed.
Web-searching:
Unable to insert the virtual optical disk NS_ERROR_FAILURE site:forums.virtualbox.org
reveals two things.
1. there might be a line missing from your posted error message. Did it also say:
2. Ejecting the presently-loaded CD or ISO from inside the guest OS, or completely shutting down not save-stating the guest then ejecting the CD/ISO from the guest's CD drive in the guest's Storage settings should fix the seize-up and allow the GAs ISO to be inserted. You would then run the installer from the guest's CD drive inside the guest OS.
The shared folders set by Virtualbox require that the Guest Additions be installed in the guest OS. So you won't be able to use Virtualbox-arranged shared folders until you are able to get the Guest Additions installed.
Web-searching:
Unable to insert the virtual optical disk NS_ERROR_FAILURE site:forums.virtualbox.org
reveals two things.
1. there might be a line missing from your posted error message. Did it also say:
If so, that's a common error with Linux guests.Could not mount the media/drive '/Applications/VirtualBox.app/Contents/MacOS/VBoxGuestAdditions.iso' (VERR_PDM_MEDIA_LOCKED).
2. Ejecting the presently-loaded CD or ISO from inside the guest OS, or completely shutting down not save-stating the guest then ejecting the CD/ISO from the guest's CD drive in the guest's Storage settings should fix the seize-up and allow the GAs ISO to be inserted. You would then run the installer from the guest's CD drive inside the guest OS.