recov_device should just be the drive letter (in windows) if you want to check an entire drive... you don't want to specify a "file"
Try:
python pywallet.py --recover --recov_device=E: --recov_size=1000Gio --recov_outputdir=.
Thank you this worked! I got a recovered wallet.dat file that was much bigger than my original (~1000KB) with a bunch of keys in it. I ran the code below and got a few hundred addresses. My Bitcoin Core is fully synced and I tried opening this wallet but get stuck on "Opening Wallet. Not sure what do next.
pywallet.py --dumpwallet --wallet=wallet.dat > walletdump.txt
Example Output:
"addr": "1GK46gd6C8nXXXXXXXXXXXX3HMgbqHF",
"compressed": false,
"encrypted_privkey": "5613a75d7ad6c19135a26eXXXXXXXXXXXXXXXX1908e61cb08cf49e21dXXXXXb1c65142912",
"label": "recovered: 93bfXXXXXXXXXXXXXXXXXX710881d50XXXXX89585154c",
"pubkey": "04ef1bc57033e7942233fb6d21f421XXXXXXXXXXXXXXXXXXXXXXXXXX6f74cf794ced69144dbb379c373d4b780fa4151bb50a3",
"reserve": 0
},