auto-mounting shared folders in VirtualBox

Posted by brannerchinese on Super User See other posts from Super User or by brannerchinese
Published on 2011-04-04T21:27:13Z Indexed on 2012/03/28 23:34 UTC
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I am writing to ask what the effect of the auto-mounting process is in VirtualBox, and where the folders can be accessed within a guest Linux system if auto-mount is used.

I have VirtualBox 4.0.4 installed on Mac OS 10.6.7, with Guest Additions apparently running correctly. The guest OS is Ubuntu 10.04, and I observe no apparent problems with it. I find that if the shared folders have "auto-mount" unchecked in the VirtualBox settings, they can then be mounted using the prescribed syntax

sudo mount -t vboxsf folder_name path_to_mount_point

and all works as it is supposed to.

But if the auto-mount option is checked, then I find that I can no longer mount the shared folders manually. I get the error

mounting failed with the error: Invalid argument

and the folders also do not appear to mount anywhere else accessible to me. Using the syntax

sudo mount -t vboxsf

without specifying a path installs them in /media, with their names prefixed with sf_, but they are not easily accessible there and I have not been able to change their owner using chown, either.

Thanks for your patient explanation.

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