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1  Bitcoin / Bitcoin Technical Support / Bitcoin doesn't start up anymore in Tiny Core Linux VM after a power off on: August 08, 2011, 09:36:37 AM
After my laptop switched off automatically when the battery got exhausted during a blackout, I'm not able anymore to start bitcoin in the Tiny Core Linux VM.
It looks easy enough to solve, because the error message is:
Code:
error loading blkindex.dat
so probably I have to remove that file, after which bitcoin will probably start up fine and will reload the blockchain.

However, looking in the .bitcoin (data) directory, I see all the files having ownership tc:staff, except for the blk0001.dat, which has root:dat.
Code:
tc@box:~/.bitcoin$ ll
total 645460
-rw-------    1 tc       staff        24576 Aug  8 08:09 __db.001
-rw-------    1 tc       staff      1130496 Aug  8 08:09 __db.002
-rw-------    1 tc       staff       270336 Aug  8 08:09 __db.003
-rw-------    1 tc       staff        98304 Aug  8 08:09 __db.004
-rw-------    1 tc       staff      3891200 Aug  8 08:09 __db.005
-rw-------    1 tc       staff        49152 Aug  8 08:09 __db.006
-rw-------    1 tc       staff     18984960 Aug  8 08:08 addr.dat
-rw-------    1 root     staff    425711616 Aug  8 06:53 blk0001.dat
-rw-------    1 tc       staff    207921152 Aug  8 08:09 blkindex.dat
drwx--S---    2 tc       staff         4096 Aug  8 07:27 database/
-rw-------    1 tc       staff            0 Jun  8 17:39 db.log
-rw-------    1 tc       staff      3037249 Aug  8 08:09 debug.log
-rw-r--r--    1 tc       staff           74 Jun 20 15:31 encryption
-rw-------    1 tc       staff       159744 Aug  8 08:09 wallet.dat
-rw-r--r--    1 tc       staff        34131 Jun 20 15:32 wallet.dat.gpg
tc@box:~/.bitcoin$

Is root-ownership for that one file specifically intended behaviour, or is it a result from the hard switch-off during the blackout?

 Huh
2  Bitcoin / Bitcoin Discussion / Apparently something worse than 'worst case' has happened at MtGox... on: August 07, 2011, 03:15:35 PM
...becasue if you want to fund your account through Euro Bank Transfer, it says:

"Euro deposits are currently offline until Friday August 5th 2011 in worst case."

It's now August 7th 2011 and the message is still there.  Huh
3  Bitcoin / Mining / Can I mine from a virtual machine Ubuntu while using my 6990's hardware? on: July 01, 2011, 07:30:11 PM
Well, the title should say (ask) it already. But, here is the replay:
Is it possible to set up a virtual machine with for instance Ubuntu and run the 6990 hardware on that?
Thanks for your answers.
4  Bitcoin / Bitcoin Discussion / Bitcoins: designed to fail on: June 04, 2011, 09:48:29 AM
The world's wealth in 2007 was more or less 150 trillion $ (USD 1.5 * 10^+12) [1]
The number of people living on earth is more or less 7 billion (7 * 10^+9) [2]
The maximum number of bitcoins is 21 million (2.1 * 10^+7) [3]

This means there is 21*10^7/7*10^9 = 0.03 BTC for every world citizen.
And the current wealth, expressed in the total available number of bitcoins in USD/BTC is 1.5*10^12/2.1*1+7 = 0.5*10^12/0.7*10^7 = 0.7 *10^5 = USD 70,000 / BTC.
With inflation going like it's going now, USD 1 might be (I'm speculating here) worth only 1 UBC (micro Bitcoin) by the time all 21 million Bitcoins are created.
Does this make the bitcoin ultimately usable as a worldwide currency, replacing current currencies?

I think not, and it's built-in.


References:
[1] http://www.stockmarketfunding.com/getfile/343e5d94-2871-48a5-9aa6-550c3da0bbd2/World-Wealth-vs-World-Derivatives-1998-2007.aspx , http://upload.wikimedia.org/wikipedia/commons/thumb/2/24/US_derivatives_and_US_wealth_vs_total_world_wealth_1995-2007.gif/800px-US_derivatives_and_US_wealth_vs_total_world_wealth_1995-2007.gif

[2] http://en.wikipedia.org/wiki/World_population ,
http://www.google.com/chart?cht=lxy&chd=s:ABCDEGHIJLMNOQRSTVWXYabcdfghiklmnpqrsuvwxz01245679,XXXYYZZaabccddeffgghhijjkklmmnoopqqrrsttuuvwwxxyzz&chds=0.0,1.0&chs=160x101&chco=287bf5ff&chls=2.0,1.0,0.0&chxt=x,r,x,r&chxs=0,333333,0,0,tl,333333|1,333333,0,-1,tl,333333|2,000000,11.5,-1,tl,333333|3,000000,11.5,-1,tl,333333&chxtc=0,2|1,2|2,0|3,0&chm=h,cccccc,0,1,1,1|h,cccccc,0,0.5,1,-1&chxp=2,0,82|3,5,50,95&chxl=0:|1960|2009|1:|0|4B|8B|2:|1960|2009|3:|0|4B|8B

[3] Mentioned many times here in this forum  Grin
5  Bitcoin / Mining / What brand HD6990 card is preferable? on: June 02, 2011, 03:04:26 PM
My supplier carries 6 brands of HD6990 card: ASUS, Club 3D, GIGABYTE, PowerColor, SAPPHIRE and XFX.
Now I remember ever having read a review of the 5970 card, and there it was stated that for instance AMD's reference design had issues with the VRM's coolings, and that ASUS and Club 3D just copied the reference, including that particular design flaw, but that Sapphire made its own improvements.
Does anybody know if this is general behaviour of these manufacturers and which manufacturer produces the best cards for mining?

Thanks
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