Data loss and data corruption are two separate instances of
data disaster that results in financial loss and loss of time. An equal amount
of resources & energy may put into work to recreate data from the scratch.
How Data Loss might
arrive on OS X–Though data is pretty much secure on Mac, still their exist plenty
of reasons which may result in loss of files & folders. Other than
accidental deletion of the file, a data may be lost due to overwriting with a
new file. Other drastic situations may arise from formatting of volume, Trojan
attacks, and abrupt shutdown of system making the files go lost. With advent of advanced hard drive
technologies, data transfer & storage have become hassle free tasks. But on
the other hand, quick corruption in the hard drive technologies have resulted
in unmounted volumes. These unmounted volumes go undetected by the OS X and
thus data persisting inside the drive is never shown to the user.
An unmounted volume is a result of corruption in directory
structure of the drive. Though it is a logical error, disk utility or an
advanced volume manager could fix it. Other than logical, a physically damaged
hard drive may also fail to mount. Both the situations are drastic, resulting
in immediate loss of data.
Tools to get data from an unmounted hard drive:
1. Stellar Phoenix Mac data recovery ($99)
Claims to recover data from a logical corrupted hard drive
(unmounted disk) within 3-4 steps. The software runs on Intel & PPC machines
and could perform deleted, formatted & lost volume recovery. In the time,
Stellar Phoenix Mac solution has gained quick popularity amongst many OS X
users who brought their data back from the ashes.
2. Disk Drill($89)
Another tool that promises to recover data with simple
steps. Disk Drill supports latest Macs and could perform all sorts of recovery
including Deep scan of media devices. Supports unmounted recovery of volumes.
3. Prosoft ($99)
As it sounds, Prosoft Data Rescue does good job rescuing files
from a logically defective hard drive.
Apart from this, it follows other conventional recovery options like
deleted, formatted and lost volume/data recovery.
Note – All of the
above software restrains them projecting recovery of files from a physically
damaged hard drive. So, if your hard drive produces strange noise or is sure to
be physically damaged then don’t use any of the above software, as it would be
of no real benefit.
How File Corruption
might occur on OS X Mac–An OS update, even an application update might
sometimes results into corruption of certain files. While the files are still
present (not lost), they may not launch, as they should. Some important part of
the file may have been permanently damaged halting the smooth opening of that
file. Other causes of corruption may be
partial removal of an application, malfunction of the header files, overwriting
of some components of a file etc. What a damaged file requires is a ‘rebuilt’
of lost & broken components.
A perfect example of a damaged file is an Image file (JPEG)
format. Once corrupted, it fails to launch or part of the image file is badly
disfigured.
Of course, a Mac is smart but none application possess the
power to reconstruct the broken images. This results in arrival of 3rd
party utilities –
Fixing corrupt JPEG
files on Mac –
·
Stellar Phoenix JPEG Repair for Mac ($39)
While there are plenty of JPEG repair software but most of
them exist for Windows OS. Seems like only Stellar Phoenix has the JPEG repair
tool for OS X Mac.
Fixing corrupt MOV
files on Mac –
·
Yodot MOV Repair ($69.95) – Scan & fixes
MP4, MOV files on Mac OS X.
·
Stellar Phoenix MOV Repair ($69) – Find all
corrupt .MOV files from Mac hard drive & repairs them.
·
Remo Repair MOV ($69) – Locates MOV files and
fixes them in no time.
All above 3 MOV repair tools are powerful enough to find
corruption & fix them. However, each one them show a repaired preview of
file for unregistered version of the software.
Fixing damaged PDF
files on Mac -
Unlike JPEG repair, we have plenty of option to choose from
utilities that fixes bad PDF files on OS X.
·
VeryPDF
PDF repair for Mac ($29.95)–Good choice for repairing multiple damaged pdf
files on Mac. Removes PDF permission passwords.
· Stellar
Phoenix PDF Repair for Mac ($49) – Stellar
Phoenix uses it’s well-established brand name & technological expertise,
which brings in this repair utility for Mac OS X. It perform repair on bunch of
pdf files, though doesn’t support password protected PDF repairs.
Let us also evaluate
back up software for Macs
Way before Cloud came into existence, Mac users widely
depend upon 3rd party cloning apps to safeguard there hard drives.
This method of data backup is traditional, reliable and user-friendly. Though
it does require some cost including cost of data back-up software, an external
hard drive or usb to save the data using a backup application. Still, backup
software for Macs are huge hit amongst OS X users.
Some trusted Mac backup software
·
Carbon Copy Cloner ($39.95)
·
SuperDuper ($27.95)
·
Stellar Drive Clone ($39)
·
Disk Utility (in-built)
·
Time Machine (can be in-built)
I would like readers to further contribute their experiences
and suggestion related to above mentioned file recovery & repair utilities
for Mac OS X. Any feedback in spite of good or bad is whole heartedly welcome. Cheers!!
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