Contact Quickseller or macbook-air on this forum and they will bet your transaction confirmed for you (for a reasonable fee). VisBTC is very full with transactions that have the same issue and only mines a block every few hours.

All input transactions have been confirmed so they shouldn't be causing the problem.

Not sure of your problem but I think I had similar with Windows.
What I did was look at the top of this forum and click torrent, then download the correct --> download the content --> take out the Mac OS bitcoin core and try running that instead.

You can copy the data directory onto a separate medium. there should be a folder called electrum_data or wallet_data, with a file in it called default_wallet (or the name of your wallet).

Copy the whole directory or just that file. It's good to remember you need to remember the SEED with this as this is what is used to unlock the encryption on this file.

If you can import it into an electrum wallet then this is possibleto do. Although yu may have to transfer the coins from the wallet file into the new electrum wallet file so it'll cost you transaction fees to do this and you won't be able to use the old private keys with the new public key.

You can reuse addresses as much as you want. It's just privacy that ensure that the same address is not suggested more than once. So it is fine to use the same address again.
It's only the private keys that you don't want to leak from these addresses as they are what give you access to the fund sstored. However, the seeds and passwords in your wallet encrypt these private keys.

I feel this can be done with electrum as well as bitcoin core+armory.
First, add the private keys into the electrum wallet.
Click to send a transaction with the specific amounts/fees.
Click to send the transaction.
Right click on the transaction and select details, then save.
Then this information (TXid, input scripts and output scripts) can be impored onto the online computer. (without a need for downloading the entire blockchain).

Your best option will be to store the coins on a separate device or find a different wallet to store it on.
You can host a node easily on a VPS I think. And the security of it is dependent on the operating system and the trustworthiness of the company you use (read the reviews beforehand). Also ensure you use strong passwords and strong encryption. And if you can, take out the private keys from the node until you actually need them (you can instead follow what's happening to your addresses on block explorers until you're ready to move the coins)

It can't hurt to back it up though if the seed recovery does work (and I'm not convinced it does based on my previous attempts - although those were cross-platform so it might be able to recover it).

Have I compiled my electrum wallet wrong then? If I try to recover it from anything by my recovery drive then it always creates a fresh wallet (although whether that's a security thing or not i'm not sure).

Anyway, sorry for accidently hijacking this thread in my previous and this response. The phassphrase that he references, is required for bitcoin-qt but I'm not sure that encrypts it as that is written in plain text as far as I know so if it is for core then it will only be useful if the rest of the file is there.

Electrum isn't a hardware wallet? If I damage my hard drive and lose the backup of my electrum wallet, then I can no access the information from it. As Electrum has no central servers to store the data on it.

Are you thinking of the hardware parts of electrum? If so, then you can definitely restore from them by just plugging them into your computer and putting in the pass code. But the regular version of electrum does not have this.

It's just an executable written in python. https://electrum.org/#download

No. Electrum also requires the entire data file as do most desktop/computer wallets.

You'll get nowhere without your original files, if it's profitible to do so then you'll have to send your hard drive to a data rcovery company for them to try to fix it. (You could try it yourself but you may end up losing more data that way from the drive).

Just use it normally and then run it with the -datadir=<file> command in order to put the data directory onto the external medium instead (a usb stick or external hard drive will both work fairly well).

No...
If he said that it's 512GB then it's probably 512GB it wouldn't get that far if it was only 4GB, it'd barely start.
And it's already nearly 50% through.

Just as an extra note. If it is a problem with the hard drive, then it's probably helpful to backup the data file every few days just to ensure that you can still access the coins if the drive ever fails or your file is lost.

Probably a hard drive issue although it does remember the text file but cannot decode the seed from the password as far as you susggest.
Try putting a copy of the portable electrum version and the data files on anotherstorage device (such as an sd card or pen drive) and see if you have toput in the password less frequently.

That's good that it's working quickly. The Pi does have about 4GHz of processing power (if you combine it's cores based on the 2nd generation model, i think the third generation model has 4.8GHz). And the operating system is not very intense on it like other GUIs are.

Could you post the TXid of the transaction here?
Also try adding it to https://www.viabtc.com/tools/txaccelerator/ this transaction accelerator.

Also, you could try messaging quickseller or macbook-air to get it confirmed (though you do have to pay for this service).

As far as I know you don't need a static ID. Your router probably already has one anyway and this is how your PI will connect to the internet and where all the requests will be sent to.

I think that fastest way is just to download it as youa re doing. The hardware and system constraints are quite limiting. If you have enough diskspace it will eventually install itself fully. Also how is the Pi connected to the internet, is it through ethernet or wireless and what is it's speed? Also, there will be a class written on the MicroSD, is it class 10 at least as thetransfer speed may reduce the downloading of the blockchain by quite a bit?
Is there a reason why you are using core though? Do you need the blockchain for anything? As you may end up killing some of the PI and the SD card in the process (meaning you have to repeat all of the steps you've already done).

I'm not sure what you're asking here, if your native language isn't english then if you look at local board then you can probably find your language there and find more appropriate answers to your queries.

However, peers are other computers that are connected to yours via a network if that's what you mean by peers. They're just other computer who hold the blockchaind and function to send you the correct blocks for you to be able to sync with the network and view the bitcoins you have (And then control and spend these Bitcoins).

"Ping Time" is merely the time between a request being sent to a node (a packet of data normally) and a response from that node to be recieved by your computer.
I'm not sure what is meant by "node/service" or "user agent".
If you meant "node service" then that is merely hosting anode which is what you already do by running the core client.

sorry, i've been offline for a while...
It's great to hear that your client is working again now.
If you have any more problems then post them in a new thread here or PM me the log files and I'll have a look and see if it's anything I can help with.

Maybe an operating system update or the core stabalised itself better on your computer so the errr should not persist anymore.