On Wed, 18 Jun 2014 18:23:39 -0700, Mike Painter
<
md.pa...@sbcglobal.net> wrote:
>
>>> But here is your chance to shine. Give us examples of what a hard
>>> drive "crash" is and how data nay be recovered under those events.
>>> Try to be honest and give us *your* knowledge, not something you look
>>> up on the net.
>>
>>They have computer programs that can be used to recover lost data.
>>
>Evasion noted.
It's called backup and restore. Decent business systems also log
transactions since the last backup so the system can be restored right
up to the point where it failed.
>>I have read that data recovery services have equipment that can cause a
>>crashed hard drive to start spinning normally.
It doesn't know what a head crash is. When the heads have graunched
across the surface, the drive may of may not spin up, and the surface
has been ruined.
Last year, I had my first ever PC head crash since I bought my first
PC in 1986 - almost 30 years. But because I had been an industry
professional in an environment where everything was designed for
recovery, I was paranoid about backup and didn't lose any data.
I replaced the hard drive and got everything back.
Even though my image on DVD disks wouldn't load, I couldn't use the
recovery partition because I had had a head crash and the backup
program wouldn't do an image restore because it was to a different
volume.
It cost me a replacement hard drive and the recovery DVD from the
manufacturer (which failed but they sent me another).
The longest and slowest part was re-installing all the updates and
applications.
>>I have read that data recovery services can take apart hard drives and
>>remove the disk. They could mount that disk in a working hard drive.
Not if a head crash has graunched the surface.
>All true but not all of them work all the time.
>
>>When I was much younger, I subscribed to MacWorld magazine and
>>read the articles and at least one or more of the articles was about
>>data recovery methods.
>>
>>I have a program on my macintosh computer called Norton Utilities for the
>>Mac. I have used that program to recover some trashed files. It was time
>>consuming since it involved looking at hundreds of trashed items to find
>>the exact item that I wanted to retrive.
It shouldn't have been.
>You can lead a horse to water but you can't make him think.
Well, it _is_ Jason.
>Imagine that you have a thousand emails all printed on separate pieces
>of paper. Cut each line out of every piece of paper, then cut the
>lines into random sizes.
>Throw them all up in the air, then reconstruct those messages by
>picking op one piece and matching it to another.
>You may use one of your computer programs to do this.
>Without human intervention it will not be possible to determine if a
>reconstructed item is complete.
>Even with a human there is no way to determine if the complete message
>is the original or if it consists of parts from other emails.
>
>The relevance is that information is stored on drives in a manner that
>requires a file allocation table to find out how the parts fit
>together.
>Damage it and you have fragments of messages all over the computer
Which is why systems get backed up.
The un-lamented Oliver North shredded documents and email, but didn't
know that the PROFS system was crash-proof and the incriminating stuff
was on mag tape.