To recover your site, first copy the receiver IDs ftom the Linked Piaware Receivers page to a text file on your computer for later use. Keep that file!
Sadly, the three years of data were kept on the corrupted SD card and may not be recoverable. I had a SD card that failed to boot, but using a usb/SD card adaptor was able to recover some files as only the bootable OS files seemed to be corrupted. All depends how the SD card failed.
On a newer SD card, install the current PiAware image, and then edit
sudo nano /boot/piaware-config.txt
Add the following below the line: # Additional settings can be added below.
Pi-North
#feeder-id e6******---****-**********0c
Pi-South
#feeder-id 6d******---****-**********1e
Customize the names to your names or site number, and put the feeder ids in the respective positions. Remove the # from the ID you want to use. The # character creates a comment field and lline is then ignored.
I keep a saved copy of my piaware-config.txt files in my computer. Other handy lines can be included in this file for when you need to customize your setup after a fresh install. I add a couple of lines to help me get a new system up and running quickly.
#sudo apt-get update
#sudo apt-get upgrade
#sudo apt-get install git unzip
#// install helpful graphs of ADSB performance
#git clone GitHub - wiedehopf/graphs1090: Graphs for readsb / dump1090-fa / dump1090 (based on dump1090-tools by mutability)
#cd graphs1090
#sudo ./install.sh
#// to update:
#sudo bash -c “$(wget -q -O - https://raw.githubusercontent.com/wiedehopf/graphs1090/master/install.sh)”
This file is yours to customize as you desire, just keep the Piaware portions intact.
Others here will likely have some better ways to recover, this is just a way I do it myself. Hope all goes well on your recovery. Have fun.