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I'm trying to set up a raspberry pi 2+ as an always on torrent box. I had it set up one time and it was working, but then when I turned it off and on again it froze on start up. After flashing the card and retrying a couple of times, now the raspberry pi won't even detect the HDD on startup after flashing. The HDD is using a powered USB hub, and my raspberry pi 3+ does start the hdd when I connect it to it using the hub. Any ideas why my 2+ won't start the hdd but my 3+ does?

Thanks very much

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  • "I turned it off and on again" - did you just turn off or poweroff? – Milliways Apr 23 '16 at 22:44
  • It was switched off from the plug socket. Which I understand isn't great, but I don't get why the hdd currently boots no problem for my pi 3 but not my pi 2. I just did a fresh os install (raspian) on the pi 2 and I won't detect the hdd – Ouiskipoiski Apr 23 '16 at 23:03
  • Post output of lsusb and `ls /dev/sd*' – Milliways Apr 23 '16 at 23:15
  • I just plugged in the hard after taking it out of the pi 3 and it just worked this tine. The light went on straight away on the drive. Can see the drive listed on lsusb now. Any idea why it mightn't have booted before? I've been going crazy over this. It's almost worse that it's seemingly fixed itself without me doing anything. – Ouiskipoiski Apr 23 '16 at 23:24
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Try using a power meter USB. This will show you how much power is required to power it. Also try using a USB port on the actual pi

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