But the 500GB HDD equates to 447.6 GiB (I.e. Based on multiples of 1024) so if you have used 437GiB I think you are pretty well full.

I suggest you copy/delete a substantial number of recordings and try again.

If it remember correctly, there’s a long discussion on “another forum” that explains why a 500GB HDD isn’t what you might think, where all the space goes and how much you actually need to record successfully.

A few things…

did you factory reset before or after updating the firmware?, if before try resetting again.

does this happen everytime? and is the box in standby or always on before the scheduled recording. If in standby leave it switched on all the time, purely for testing purposes

what happens if you do an instant recording, does that fail after 9-18 minutes

is there a pattern to the failed recordings, i.e. time of day

I’d hazard a guess that the drive is okay and the problem lies either with the power supply or environment. I’d be tempted to push it as far as I could, record two different HD programmes and playback a HD recorded file, if possible from usb stick. Does it get noticeably warmer after 10 -20 mins of use, particularly if you run the above 2 x recording and playback at the same time

Has the box been moved or anything removed/added around it?

There’s always the old joke about the cleaner coming in and unplugging the computer/life-support system, if it’s struggling after standby then it may be power supply related, hence leave it always on to test. Temperature is always a problem, also loose connections in and outside the box and general glitches on the mains – think about whether anything had changed around the time you first noticed the failures.

Backing up and reformatting – disk checking etc., if you have the time and capacity isn’t a bad thing to be doing anyway. My guess, as above, is that it’s power or environment related. When it’s unplugged you may want to try re-seating the connections to the drive, sata has to be one of the worst connections I’ve ever come across.

Let us know how you get on and if formatting does fix the “Recording Failure: Loss of Power” error

whilst you’re there

what’s the temperature of the disk, for info mine is 53 degrees C

also is the power cycle or start-stop-count increasing faster than it should

unfortunately the newer drives are less reliable.

I’ve a 2TB with 24512 hours and 0 errors, but it’s no longer available, hasn’t been for a few years.

If I had to replace it, I’d be looking at something like:

http://www.ebuyer.com/524859-hdd-av-grn-2tb-3-5-sata-3gbs-64mb-wd20eurx

comes with a 3 year guarantee, some of the others come with 2 or even 1 year which is as much use as a chocolate teapot. It’s always a punt and you can only do your best with a bit of research and trust.

I’d be keeping an eye on the power stop start cycle of your current drive for the moment, also temperture during use and also re-seating connections if there’s still a problem. It’d be daft to get a new drive only to find the same problems come back.

my drive also has 763 stop start count and power cycle count both the same, I notice from your attachment yours is 6609 and 3305, if I’m reading it correctly with a 6591 hours power on. If this is correct the drive is being stopped and started more than once an hour. A power supply problem can cause file system errors

A big thanks to those that look after the CF, most of us here would be well and truly stuffed without it