Quote from: cr1776 on July 21, 2016, 10:41:50 PM

Back up both the "wallet.dat" and the "Wallet copy.dat" somewhere else so you have 1 or 2 extra copies of them before you do anything else. Also, backup any wallet.dat stored in here:
~/Library/Application Support/Bitcoin/
(see https://en.bitcoin.it/wiki/Data_directory#Mac )

Make sure you have 2 backups of each - better to be safe.

The next step will be to figure out what happened exactly.

1.There isn't an external drive on this MacBook, is there?

2. Also, can you explain what you mean by "The wallet.dat file is still present but the wallet doesnt read the content of it as it looks like."

3. Do you know how those two files got on the Mac Desktop? That is not where Bitcoin Core stores them without some user intervention.

Quote from: Prutser112 on July 21, 2016, 10:15:42 PM

Hello Bitcoin community,

I am totally new to Bitcoin and at the moment i am a bit shocked. Shocked

Recently I downloaded the Bitcoin Core wallet onto my macbook and installed/synchronised all.
Received some coins in that wallet and closed it.

Opened the wallet next day again, and.... it's gone. no more BTC, no more transaction, no more address, all empty.
The wallet.dat file is still present but the wallet doesnt read the content of it as it looks like.

I want my BTC to show up again.

Does anybody know how to put back a wallet.dat file in a Bitcoin Core wallet on a Macbook?

In my desktop there is now two files: wallet.dat and Wallet copy.dat?

How do I get this wallet to work again?

Help!!

Hello CR1776,

Thanks for your reply.

Immediately, while trying to make the recommended back ups, I am lost...

You write: Also, backup any wallet.dat stored in here: ~/Library/Application Support/Bitcoin/

This path I can't follow, cause there is no support folder?

When I do a search for wallet.dat files on this mac, I find those 2 files under Applications/shared.
I now only hope I have the correct files backed up?
I took the ones I found on my desktop to back up.

I can't make these files visible?

Another problem is that I installed a Multibit wallet which is not used.
But this program created also .dat files and I can't distinguish which files belong to multibit and which ones to Bitcoin core...

This keeping value stored in digital wallets is certainly not something for people who are not familiar with digital tech.
I get sick and nauseous from what I all try and fail with, always in doubt cause of lack of knowledge.

Anyway, now I have maybe?? backed up the correct files...

To point:

1:

What do you mean by an "external drive"?, the only drive that I can point to as external is my Time machine.
Do you mean that by "external drive"?

2:

By: "The wallet.dat file is still present but the wallet doesn't read the content of it as it looks like.",

I meant: The file wallet.dat is still physically available on this mac but the program Bitcoin Core doesn't recognize it, or cant find the file.
In this wallet.dat file the content of the wallet is stored I suppose? a piece of Blockchain?
So If this file is still there, why doesn't Bitcoin Core program read it??
Could the file be in the wrong location? I did not tell the mac to put the wallet.dat file on the desktop, Bitcoin Core done that by itself.
The time I opened the wallet and the BTC's were still there, the wallet.dat file was also located on Desktop.
So before the program found the file in first instance and then later not any more. For me hard/not to explain.

3:

I have not a clue why Bitcoin Core put them there, I did not move them nor instruct to put them there.
Maybe somewhere is noted that this is my standard file location?

Pls help further to get my coins back, I feel sick.