Fix Synology DS412+ DSM 5.2 file system

I have been using a Synology DS412+ (with DSM 5.2) for almost 1 years now and I am happy with it.

The other day, I forgot to switch on my Prolink IPS1000 UPS and electricity went out. Electricity on, I switched on my UPS and my DS came up okay, I can browse the files and DS was checking parity integrity. Electricity went out again and I afraid checking would take long and UPS couldn’t hold enough, so I shut down.

When electricity was on again and my DS was up, I found out the following problem.

  1. Disk management showed error “Connection failed. Please check your network settings.”
  2. Disk management was not showing anything but blank area.
  3. Info Center showed incorrect capacity and usage was over 100%.
  4. I can browse but DS warned me of not enough storage on widget.
  5. CPU usage was 99% on widget.
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