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Read
Articles
about
Data Recovery
and Data Loss.
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Data Safety Tips
Emergency!
The computer has failed: what now?
- Impact:
Turn everything off for 5 minutes and let things stabilize.
Once everything is turned back on, check files and applications
for damage. Make sure there's a backup of the important
files right away. Be alert for errors indicating deeper
problems.
- Power surge: Unplug
everything and let it sit for 15 minutes. Then, as above,
bring the system up & check for damage. Proceed with caution.
- Water or fire: Unplug
everything. Put the hard disk in a sealed plastic bag
("zip-lock" style bags are fine) and send to us for recovery.
Don't dust out or try to dry out.
a.
Why not dust or dry? When dried, water can leave mineral
deposits or other contaminants behind, as can smoke.
- Symptoms
a.
Screeching or scraping. This is
a bad sign. Immediately turn off the computer. Let the
hard disk stabilize for a few minutes and either remove
the hard disk or unplug the power from it. Then turn the
computer back on. If it's still screeching (and there's
no power to the hard disk), the problem is not the hard
disk. You're in luck! Your data may still be safe and
you should have your computer diagnosed.
b.
Screeching or scraping, part 2. If the noise is coming
from the hard disk, it has a serious problem and needs
serious help. It is best to NOT turn the hard disk back
on in this situation. It can take from only a few seconds
to a few minutes to render the media unrecoverable when
the noise is from a head crash. You need hard disk recovery.
Call us for a quote.
c.
Clicking: As above, turn off the system immediately
and determine if the noise is coming from the computer
or the hard drive. A clicking sound often indicates head
or media damage, and the longer the drive continues to
spin, the deeper the damage will go. If your hard disk
is clicking, don't try to restart the system. Call us
for a quote.
d.
System won't boot, but there are no odd noises. Note
listen carefully for clicking sounds (see "clicking" above).
Try booting into Safe Mode (on a Windows system), or with
Extensions disabled (on a Macintosh) then see if the directory
structure is accessible. If it is, you may be able to
back up important documents to a floppy disk or an attached
external hard disk.
i. Booting in Windows
Safe Mode: When you power on your computer, press and
hold the "F8" key right when you see the text (not the
colorful banner), "Starting Windows (your version)".
It needs to be pressed at just the right time, so you
may need to try it several times, or press the key repeatedly.
A text screen should come up that allows you several modes
for starting. You want Safe Mode. Many systems have a
corporate banner that hides the "Starting Windows... "
text. Usually pressing the "Esc" key before the banner
comes up will cause it to go away. Then press the F8 key.
ii. Booting a Mac in
safe Mode or with the Extensions off: Simply hold the
Shift key when you start the Mac. This should cause OS
X to boot into Safe Mode, where it will want to run First
Aid. This causes OS 9 to boot with Extensions off.
iii.
Try booting from a floppy diskette, CD, or external hard
disk: Be Careful!!! Many systems come with a System Restore
CD that will likely
erase all of your data! Many times, a client has
called after their computer vendor had them do this. Be
careful! even if someone tells you to do it, be aware
that you may be erasing your data. Read all messages carefully.
You want only to boot the system so you can back up files
you do not want to do anything that will write
data or do any partition or format operations.
1.
Windows PCs: Most PCs have a button to press that
will bring up boot options, or boot order. It varies form
computer to computer, but on many newer PCs, it is the
"F1" or "F2" key. It is sometimes the "Esc" or "Del" key.
Check with your manufacturer, if possible, or just experiment.
2. Mac: Holding
the "C" key at startup should force a boot from the CD
drive. Holding "T" at start up should force a boot from
an external drive (in OS X).
iv. Try putting the drive in another system. Take
the drive out of the computer, and put it in as a secondary
drive in another system. You will need to change jumper
settings, and if it's a laptop drive, you will need to
get an adapter to plug it into a desktop computer. But
you may be able to bring the drive up as a secondary drive
in another system and copy your files off, or back them
up. Again, take care to listen for any unusual sounds.
If the drive begins to click or screech, you should shut
it off immediately and call us for a quote to recover
your data.
v. Disk repair
utilities, First Aid, and Data recovery software:
1.
If the drive is physically damaged, or making unusual
sounds, it should be turned off immediately and sent in
for recovery. In such a circumstance, running any software
at all is likely to damage your data, possibly beyond
recoverability. Call for data recovery service.
2.
If the file structure is damaged, disk repair software
can damage the files beyond recoverability. Great caution
must be taken when running and disk repair utility that
writes anything to the hard disk and most of them
do. If you do run a "do it yourself" utility, keep the
following precautions in mind.
a.
Read the documentation. It's a pain, but it might save
you from a fatal mistake.
b.
Save an "undo" file. Many repair utilities allow the user
to save a file that will allow changes to be undone. If
the utility does give you this option, then do it, by
all means. Save the file to a different drive than the
one on which you are working. If the software needs to
be run several times, rename the previous undo file to
something like, "1st try'" "2nd try," etc. and save a
separate undo file. If the repairs need to be undone,
then undo them one at a time, using the newest undo file
first, and the oldest one last.
c.
Don't allow the software to make changes to "FAT", "FAT
tables", or "MFT." Don't let it make changes to anything
that sounds like parts of a tree, such as "leaves", "trees",
or "b-trees." Don't let it make changes to anything with
"node" in it. These kinds of repairs can damage your file
structure beyond recoverability.
3.
Don't reformat your hard disk. If you want to get your
files back, don't let anything or anyone format your hard
disk. While we have had success on many occasions recovering
data from formatted hard disks, it always makes things
more difficult.
Being proactive:
Setting up your computer workspace
for success, so you don't need data recovery services in
the future.
- Heat:
Many hard disk failures are due to heat.
a. This may come from the environment, from two
drives being too close together, or from an overworked
system fan in an overpowered system.
b. Keep PCs out of the sun,
and keep them in a temperate room.
c. Don't put
a computer on a soft surface, such as on carpeting. This
keeps air from circulating and may plug up vent holes.
d. If you add an extra internal hard disk, try
to leave a bit of airflow space between hard disks inside
the computer.
e. Auxiliary fans (such as those that fit in disk
drive slots) are useful, but make sure the airflow assists
the main system fan, rather than working against it.
- Cold:
Extreme cold may cause failures as well.
a. Dust and fur: Dust makes heat problems worse,
ruins cooling fans, can gum up moving parts (like fans,
or CD or floppy drives). Cat's love to sit on nice warm
computers and monitors, but pet fur will coat the components
inside your computer like a custom kitty- or doggie-fur
sweater.
- Vibration:
Is a great enemy of hard disks. We often see systems sitting
on the floor, in easy reach of tapping feet, and full
of dust. Impact and inkjet printers sitting too close,
or on the same table, can cause too much vibration over
time, as can subwoofers. Systems on slamming file cabinets
are a bad idea, too.
- Electrical:
A tremendous number of drive failures are related to power
surges. Fluctuations happen all day, every day in nearly
every environment. Economy power strips are not much of
a solution. Uninterruptible power supplies are a practical
solution, as they isolate the system from the wall current.
Taking safety measures: Actions a
user can take to make computing safer.
- Backup:
If everyone backed up all of the time, no one would ever
need data recovery. But no one backs up all of the time
and most don't ever back up at all. An excellent method
of backup
is an external hard disk.
- Turn
off at night:
There are many schools of thought on this subject, but
here's our view from two decades of data recovery. Turn
off the computer at night and it won't be subject to the
vagaries of the environment, from hackers, to power surges,
to the occasional earthquake or flood
- Save:
Hit the save button frequently while working on a file
or document. All too often, the crash happens at the end
of a couple of hours of heavy thinking and rapid writing.
Get in the habit of saving every time you stop to think.
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