Wednesday, January 27, 2010

Bad 90s Oakley Blades

Day of Remembrance

Marc Chagall-The White Crucifixion, 1938
http://lettovisto.myblog.it/archive/2009/03/16/la-crocifissione-bianca-di- marc-chagall.html


Today sessantacincque years ago, the Red Army soldiers opened the gates of the Auschwitz death camp here because this is the day chosen to commemorate the Holocaust.

Some time ago I found a wonderful quotation from Primo Levi, one of the few who managed to get out alive from that field, that says "if you can not understand, you need to know" and then I feel good today, to celebrate this day Levi expressed a thought of returning in 1974 and I'm sure, still relevant today.

"Every time has its Fascism, he noticed the warning signs wherever the concentration of power denies the citizen the possibility and the ability to express and implement their will. Here it comes in many ways, not necessarily with the fear police intimidation, but also by denying or distorting information, polluting justice, crippling the school, spreading in many subtle ways, the nostalgia for a world in which reigned order, and where the security of the privileged few rested on forced labor and enforced silence of many. "

(
Primo Levi by Corriere della Sera, May 8, 1974 ).


Vincenzo

Saturday, January 16, 2010

Do 9 Year Olds Wear Thongs

The bad sector and the acquisition forensic

If you must have a hard disk in a forensic, ie all the trappings necessary to ensure that the copy is identical to the original, to all those working in the field comes to mind the use of DD, or DCFLDD

DC3DD

(In the Open Source GNU / Linux), with the usual options and parameters.

are two approaches: 1) optimistic (we consider the healthy disc and all areas healthy) 2) Pessimistic (we consider that the disk has some bad sector) When the optimistic approach is repudiated, because when you find yourself with the acquisition of reading errors, then you tend to take the viewpoint pessimistic, sometimes even start all over again.

examine scenarios: dd if = / dev / sdb of = / conv = media/sdc1/disco.dd noerror, sync bs = 32K
suscritto The command reads blocks from disk is 32KB / Dev / sdb and write destination disk / media/sdc1 (mounted in writing) the file disco.dd, the option conv = noerror, sync serves two functions:

1)
noerror
- Tells dd not Halting before any read errors, ignoring the unreadable blocks, but without the sync, change the address of record, as the image (disco.dd) of the disc would have a final size wrong, less than that of the disc original.
2)

Sync - The flag sync forces dd to write the blocks of the size you choose (eg BS = 32K) and if there are not enough data to fill the block, it will be filled with zeros (0s padding). This creates a problem, the target image file size will have a multiple choice of BS. Eg if the source disc is 6Kb and BS = 4K, the image file size will have as 8Kb.

And with a BS = 32K and conv = noerror, sync, if we encounter bad sectors, but they belong to the read buffer of 32Kb, the DD should be configured as well to fill 32Kb of zeros, even sacrificing the health sector that there might be in those 32Kb. If there are only two bad sectors 512 bytes * 2 = 1024 bytes = 1Kb, 31Kb means that the remaining will be zero because dd has read a block from 32Kb met and made errors filling up the entire block of zeros bed. So the solution
would be to set up a dd with BS = 512, which is the minimum size of a sector, so as to read the disk, sector by sector, and if one of them is unreadable, it would be filled with zeros (sync), while the next sector (read) would be read correctly, preserving its contents.


dd if = / dev / sdb of = / conv = media/sdc1/disco.dd noerror, sync bs = 512
The problem with this configuration is that more stress on the hard disk, forcing a lot of readings ( sector by sector) and makes the process slower.
How to fix? There are alternative tools such as ddrescue
or
dc3dd
, which allow read larger blocks of 512 bytes, but when you are confronted with a mistake, they will use the minimum size of block size, 512 bytes and just fill with zeros.
DC3DD has the default blocksize of 32768 bytes (32Kb), in order to increase performance.
The file is calibrated on the final image size regardless of the source disk block size, so the image file size is exactly the same as if we had used a BS = 512.
Sector Error Recovery

When you encounter an error and the block size is larger than the area of \u200b\u200bthe source device, and the parameter conv = sync, noerror is set, the search dc3dd the top end of the block and try to read each indvidual sector, so the areas will be acquired good and bad will be replaced by zero.
This feature allows you to acquire the undamaged areas of the disc at higher speeds (as the BS = 32K), without losing any data blocks surrounding a bad sector.
To activate this mode is required to direct I / O mode enabled (iflag = direct on Linux, / dev / rdisk * Mac OS X). dc3dd if = / dev / sdb of = / conv = media/sdc1/disco.dd noerror, sync bs = 32k iflag = direct or



with ddrescue ddrescue-r3-d / dev / sdb / media/sdc1/disco.dd log.txt



In essence, the parameter
iflag = direct or
for ddrescue-d, is used to bypass the kernel cache (pagecache) * and go directly to disk (direct I / O), considering that the minimum size of the sector . Those wishing to use
DCFLDD with direct access can not use the parameter iflag = direct, since dcfldd is a fork of dd, and then does not follow the same development of the latter, but can access the source device in direct I / O via the / dev / raw (
to this document on raw devices in GNU / Linux
). It 'clear that forensic tend to use more as a tool DC3DD since it also features multiple automatic hashing, verification, etc..
Eg dc3dd if = / dev / sdb of = / conv = media/sdc1/disco.dd noerror, sync bs = 32k = iflag = direct progress on hash = md5, sha1 log = log.txt vf = / dev / sdb verifylog = log_verifica.txt
* The page cache is the place where the kernel keeps a copy of the data in RAM to improve performance by avoiding I / O of the disk, where data must be read is already in RAM. DC3DD is based on DD, then iflag = direct also works with DD.

Ovulation Mucus Excess

Cossacks on horseback

Amazon costumes 19secolo ride in the countryside of Moscow-Sergei Karpukhin/Reuters-



Advanced galloping in the snow,
muffled sounds, feel numb, smoke from his nose.

The King of the Tartars rests in the ice cave,
a warm coat on the shoulders of the skins of foxes,
in our hands the letter sent by Prince Igor.

The Cossacks are at the gates of the Kingdom,
and there is a difficult choice to make.
war or surrender?
Good or bad, love or hate, right or wrong?

will be a long night for the guard of the King of the Tartars.


Vincenzo





Wednesday, January 6, 2010

What Kinda Honda Atv Should I Buy

Dog Blues and ants



was everyone and anyone, need of care but very independent.
He moved at ease in the big city, you could see the north and west a few hours later, only to see him in the south-east, then south to find him. But
the south was ill.
He moved well in metro and taxi, take the trolley bus and trams, was driving the car and knew how to ride a bike, but only with wheels.
More eat and then, if anything remained, it was used. Did not disdain to cook for themselves and liked to drink, but never sick.
He liked to run on the grass, playing with the ball on the fly and jump on it, to wit, with flair, for fun.

Sometimes he disappeared for a few weeks and nobody knew where he was going: maybe or maybe in the mountains to the sea, who knows ... certainly knew skiing, he was certainly a great swimmer.

Where to derive all these qualities and abilities was never clear.
is only known that, among other peculiarities, he had one that perhaps was a gift, a kind of mystical vision.
It happened like this, without warning, without apparent logic.
Sometimes when you wake up and sometimes in the eternal moment of falling.
's happened at times in dreams and sometimes in full consciousness.
was as if, at a supersonic speed, had been catapulted into outer space to the ground.
a muzzle. A look at the ants.

This is the story of the dog Blues: the dog that was to everyone and anyone.


Vincenzo