Nokia N91 Hard Drive Maintenance page 13

Question
What should I do if the hard disk on my Nokia device makes
unusual noises?
Answer
If the drive is making any loud, unusual noises such as
clicking or grinding, the drive may be about to fail and may
need to be replaced. Back up any sensitive data you want to
keep while the drive is still operable.
To do this, connect your Nokia device to a compatible PC
using either a USB cable or Bluetooth technology. If you are
using the DKE-2 USB cable, select USB as the connection
method. This method gives you total control of what
you move and to where, but you cannot see all the file
information. You may not be able to transfer material that
has been protected against copying. Additionally, use Nokia
PC Suite to back up the data in the device's memory, in case
the device is replaced.
If the hard drive fails or if the noises persist, contact your
nearest Authorized Service Center.
Question
What can I do if my Nokia device does not detect its own
hard drive?
Answer
You may have run into a hardware problem.
If the hard drive is not recognized by the operating system or
any device applications, there are a few things you may try
out before contacting the nearest Authorized Service Center.
Try connecting your Nokia device to your compatible PC and
run disk utilities. If the connection cannot be made (in other
words, your PC does not recognize your Nokia device hard
drive) then try to pdate your Nokia device software using
Nokia Software updater, which can be found at
nokia.com/ under the support section. If updating the
software is successful, format your Nokia device hard drive.
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