usb recording

You should still be able to fit a film or so on there, as for the recording location, when you add the timer, you specify where to save it, media/hdd/movies is usually set, but it can be set to usb.

you may have to set it up in Hard Disk settings?

Haven't used BH for a while but lookout for HDD or Hard Disk in the settings menu!

You should be able to set destination there (can in vix anyways lol)

if that doesn't work try below mate found specifically for BlackHole!

How to setup your Vu+ box for recording on an usb stick or on another device connected to an usb port.

Mount your usb stick by Devices Manager as /media/usb
Blue Panel > Black Hole Settings > Devices Manager > Mountpoints ...

By a software FTP or by telnet
create a folder named movie on your usb stick: /media/usb/movie

Enable Expert mode in Customize menu:
Menu > Setup > System > Customize > Setup Mode: Expert

Change the default paths for recordings:
open theRecordings Paths panel

Menu > Setup > Sytem > Recording Path

Select the item Default movie location and press the OK button
then press the Menu button and select the item Switch to filelist
now you will be able to navigate through the directories and to select the path
/media/usb/movie by pressing the green button

After you pressed the green button and returned to the Recordings Paths panel
select the item Timer record location by pressing the OK button
and select the path /media/usb/movie by pressing the arrow down button
then press the OK button to save and to return to Recordings Paths panel

Select the item Instant record location by pressing the OK button
and select the path /media/usb/movie by pressing the arrow down button
then press the OK button to save and to return to Recordings Paths panel

Select the item Timeshift location and press the OK button
then press the Menu button and select the item Switch to filelist
navigate through the directories and select the path /media/usb/movie by pressing the green button

Now you will return to the Recordings Paths panel and you have to press the green button to save all the setting and to exit from the panel.

Thanks to Mito (google via vupluscommunity)

Just a rough guide to bear in mind on file size types when recording!

4gb per hour of HD recording
2gb per hour of SD recording

(estimates only - dependant on channel recording)