undecided - 25 minutes ago »
Just for the benefit of the next person who googles this setting in a panic... if your disk is working fine, this should do nothing bad.
We had 150 episodes of a series recorded. (No, there were not 150 episodes in that series - but Humax are rubbish at de-duplication, if it bothers at all. Anyway, that's another story)
When we tried to delete the whole series, it froze for two seconds then rebooted. Each time, it would have deleted around 10 episodes. Still quicker than deleting them individually, but not by much.
Anyway, we got down to 132 episodes, and suddenly the delete series button worked. But it left a single episode still there. There were no contents to the file (Unrecognizable file format was the error, I think), and when we manually tried to delete the file, the Humax gods laughed at us and made a rude gesture in our direction.
This option fixed the problems; as far as we could tell, all other recordings are intact. It took less than 10 minutes (500gb disk @ 65% full)
Of course, your mileage may vary; please clean your disks responsibly!
Re The duplication - it's the broadcasters fault in how they code the series. For Example The BBC coded all series of Father Brown as 1 series. So if you left it for long enough you could get up to 3 or 4 episode ones's from subsequent series at the top of the list and so on. The crap order however is down to Freesat's software,
Channel 4 and 5 are prime offenders. A recent run of daytime run of a property in the sun type programme aired early in the day and was repeated the following day later in the afternoon. The numpties at CH 4 gave them both the same series crid but a different programme crid so naturally the Humax recorded both believing the repeat was a different episode.
Any Freesat+/ Freeview+ /Freeview Play /Youview box would do the same. Though they are likely to use a more sensible order purely based on time and date of the recording and ignore episode numbers when the broadcaster provides them.
My guess in post 4 appears to be vindicated, thanks for that 
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