[vbox-dev] Why do I get 'Protocol error' when I try to access the shared folder?

Frank Mehnert Frank.Mehnert at Sun.COM
Wed Jun 23 01:53:07 PDT 2010

On Wednesday 23 June 2010, Yuri wrote:
> I run Ununtu (32-bit) guest on FreeBSD (32-bit).
> Shared folder is defined in FreeBSD host with the name 'vbox', it mounts
> ok. But 'sudo ls /this/mounted/folder' says:
> cannot open directory: Protocol error
> How to fix this?

Protocol error in this context usually means that the shared folder was
not found. Are you sure that this shared folder was successfully mounted
in the guest? Did you already check the VBox.log file for information
which shared folder was mounted?

Kind regards,

Dr.-Ing. Frank Mehnert

Sitz der Gesellschaft:
Sun Microsystems GmbH, Sonnenallee 1, 85551 Kirchheim-Heimstetten
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Geschäftsführer: Jürgen Kunz
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