Thank you for answer now it start to make sense
But i dont understand: ,,Keep in mind that pruning still downloads all those 300GB (minus what you already have), hence it's still slow.,, - what is purpose of pruning then?
I only have about 200 gb of space or can I use external hdd?
Pretty sure you can also use an external HDD if you just specify core to use that folder, (I believe datadir="" should do the trick)
but pruning is meant simply for saving space, nothing else. so prune=550 means you'll only keep 550 mb worth of blocks, but you still verify every block.
It does come with a few disadvantages, since you don't have every block anymore you can't use stuff such as txindex=1 etc.
If you don't want to sync ~ half a year worth of data you can also do what hussein recommended, that is, run that command (export your private key), (if you don't trust us google yourself how to export the key of)
1Cb5Hk4FyY7wvTNkfZJCgdnCaj6tmgYh61
Then, download
Electrum (Manually verify the download signature!), and import the private key, and your funds
should show up!
(Edit: I'm not sure what your download speed is, but if it's relatively high you might as well just sync and see what happens before trying the above.
If you don't have the private key for 1Cb and it's not showing up in your blockchain.info wallet, it seems highly likely to me that something else has gone wrong, and that this is not just a syncing issue. (Clipboard malware, wrong copy-paste?)
^ Although, given that the funds haven't moved, I find this to be pretty unlikely too?!
)
(facepalm) how easy - iam new to mac. Thank you!! 
