Home Support ADRC FAQ
ADRC Data Recovery Tool FAQ
Check our Frequently Asked Questions to get a quick answer to the most common inquiries.
The FAQ page features selected solutions for users' reference by the PenZoft technical support
What causes data loss?
|What causes data loss?
There are many factors that contribute to data loss. Natural disaster, computer virus, data
corruption, computer crime, physical impact/damage or human errors are examples that may
result in the data loss. Typically, one or more of the following symptom may appear:
BIOS cannot not detect the hard disk drive.
"Operating system not found" error.
Power surges result in "no disk drive found" error.
Strange clicking or grinding noises from hard disk drive.
Abnormal spinning action of the disk drive.
Missing folders or files without reason.
Accidental deletion, format or fdisk.
Natural disasters or accident involving fire, water or crash.
|What are the chances of getting back my data?
If you have not been fiddling with the data media which may cause further damage after failure,
it is almost definite than we can get back the data for you.
|What is data recovery?
It is the resecue process of retrieving lost or inaccessible data from physically or logically
|After inadvertantly deleting some important data, can I continue to use the
computer system before I get it recovered?
Not unless you want to run the risk of losing the deleted data. Once the deleted data is deleted,
the data space (containing your deleted data) will be marked deleted but the contents is still
intact. This data will be finally "blanket" over by new data. If you continue to use the computer
system, you could be creating new data which finally overwrites your old data.
|Can I run scandisk or chkdsk to fix the problem if the system freezes?
We advise not to. In most cases, running scandisk and chkdsk will stress the hard disk further if
the condition of failure is associated with hardware. Even if the disk is physically sound, running
such utilities may result in large number of orphan file fragments without its original names and
|Are there any DIY tricks that may help?
Some disks may not need data recovery service. Learn more about some simple do-it-yourself
data recovery and preliminary checking before you consider full-fledge data recovery service by
The followings are some generic "tricks" but could potentially damage your drive further. They
are meant for situations whereby there is no severe hardware failure and you know what you
are doing. You must be aware that by following such tricks, you could risk losing your data
forever. Please do not attempt any such homebrew recovery methods if your data is valuable.
In some cases, the more you attempt recovery on a failed drive, the more difficult it is for a
professional data recovery company to recover your data.
Verify that the jumpers, power cables, IDE (or SCSI) cables are firmly seated and are in good
If the drive is not spinning (Neither do you feel any vibration, nor any spinning sound), try:
the drive firmly (without excessive force). This will only work if there is a slight Read-Write
head "stiction". If the situation is real "sticky", you probably need to send the disk to a data
recovery professional to avoid damaging the platter.
We hear one popular "cool trick" mentioned by some news group. They suggest putting the
disk into a freezer overnight. However, there is real danger that when you take up the drive,
water get condensed on the internal platter and this will cause imminent disk failure. We
advise against this.
Scan disk is something that you should usually avoid if you feel that this could be hardware
related failure. Scan disk will only fix minor logical corruption and when the number of bad
sectors is small and not too severe.