If I remember correctly, installing the bootHDR package from Webif appears to hang, so it is not always easy to tell if the installation has completed. If you look in '/drive1/mod' you should see a folder 'HDRfs'. If this is not there, bootHDR has not installed correctly.
It was recommended to install the virtual disk package (rather than virtual disk 2) but don't bother to install either, it is not necessary. BootHDR runs the HDR-FOX software on the the HD-FOX. On the HDR-FOX, if you copy an unprotected recording (standard definition, by default) from the internal drive (HDD) to an external drive (e.g. drive1) using the remote control handset it will be decrypted in the process. With bootHDR, the folder '/drive1/Video' is mapped as the HDR-FOX 'My Video' folder, but 'drive1' and its subfolders are also still available as a USB device. What I do is have a folder called 'Recordings' under 'drive1'. In HDR mode, if you then copy a recording from HDD (My Video) to 'drive1/Recordings' it will be decrypted.
Back in HD-FOX mode, if you configure MediaTomb to serve content from '/drive1/Recordings' your files should be available on other devices that have DLNA clients.
Also install the auto-unprotect package on your HD-FOX if you want to decrypt high def. recordings.
In '/drive1/*modsettings' there is a folder called 'trigger HDR mode' (or something similar). If you cut and paste this folder in to 'drive1' the unit should reboot into HDR mode. Alternatively, from the command line in Telnet, typing 'bootHDRmode' should work too (if it doesn't try typing 'bootHDR' instead).