Virtualbox - /Sbin/Mount.Vboxsf: Mounting Failed Amongst The Error: Protocol Fault [Solution]

I role Oracle's virtual machine, Virtualbox to run the Linux operating organization from my Windows machine. It's the most uncomplicated means to accept 2 operating organization inward your laptop or PC. Since I run most of Java programme inward Linux, VirtualBox gives me a squeamish interface to run UNIX commands correct from Windows box. This weblog ship service is close the mounting of shared folder failed fault inward Oracle's Virtualbox VM. It was working fine hateful solar daytime earlier yesterday in addition to now, after I restarted my virtual box in addition to tried to mountain my shared folder, I was greeted past times this error: "/sbin/mount.vboxsf: mounting failed amongst the error: Protocol error". I was using the next dominance to mountain my shared folder on VirtualBox:
$ mountain -t vboxsf mountfolder /home/devInHost/mountfolder

I was running Oracle's VirtualBox 4.1 version amongst the invitee operating organization every bit RedHat Linux in addition to host OS every bit Windows 8.


Solving /sbin/mount.vboxsf: mounting failed amongst the error: Protocol fault VirtualBox

There was zip unlike I was trying, I had run this dominance successfully numerous times, but it was non working today.


I looked all over the mesh for a solution in addition to tried things similar running this dominance after doing
$ cd / 
or
$ cd
but amongst no luck. After a flake of struggle, I flora that my virtual box has no shared folder.

I went to Settings -> Shared Folders in addition to at that topographic point was zip on it, fifty-fifty though I had specified shared folder inward the previous run. I later on realized that I had non made it permanent, that's why when I restarted my VirtualBox, at that topographic point was no shared folder.

Once I specified the shared folder the dominance ran fine, fifty-fifty without restarting  the virtual box.

 Virtualbox to run the Linux operating organization from my Windows machine VirtualBox - /sbin/mount.vboxsf: mounting failed amongst the error: Protocol fault [Solution]

Summary

Here is the summary of what happened, what was the beginning elbow grease of the fault in addition to how I fixed it.

What I was trying to do: 
mounting shared folder on Linux invitee OS within Oracle VirtualBox.

Command:
$ mountain -t vboxsf mountfolder /home/devInHost/mountfolder

Error:
"/sbin/mount.vboxsf: mounting failed amongst the error: Protocol error"

Cause:
There was no shared folder. I had earlier end run but it wasn't permanent then when I restarted the Virtual box, it got reset.  You tin strength out banking concern jibe this past times going to Settings -> Shared Folders

Solution:
Specify the novel shared folder in addition to re-run the command $ mountain -t vboxsf mountfolder /home/devInHost/mountfolder again. It volition live on fine, no need to restart the Virtual box again.

Thanks, I promise this tin strength out relieve simply about fourth dimension for you, when yous larn this error, don't forget to banking concern jibe your shared folder settings inward the virtual box earlier looking into the mesh for the solution.

Further Learning
Understanding the Java Virtual Machine: Class Loading in addition to Reflection
Java Performance The Definitive Guide By Scott Oaks
Understanding in addition to Solving Java Memory Problems

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