Nokia N91 User's Guide download pdf (Page 106)

Tools

105

Memory-Hard drive

To monitor the amount of used and free disk space on the

device hard drive, press , and select Tools > Hard drive.

To see how much disc space the different applications and

data types use, select Options > Memory details.

To change the name of the hard drive, select Options >

Hard drive name.

Format hard drive

Formatting the hard drive increases the demand on battery

power. Do not use your device for anything else and use a

charger while formatting the hard drive.

When the hard drive is formatted, all data on the drive

is permanently lost. Back up data you want to keep before

formatting the hard drive. You can use Nokia PC Suite

to back up data to a compatible PC. If your device needs

to be repaired or replaced, a back-up copy is required

to restore data protected by digital rights management

technologies (DRM).

To format the hard drive, select Options > Format hard

drive > Quick format or Full format. Use Full format to

completely clean the disk. This may be necessary if you give

your device to someone else and you want to erase all the

personal data first. Use Full format also if you have disk

corruption problems. If corrupted sectors are found,

Full format will isolate those sectors to prevent further

problems. Use Quick format for a previously formatted

disk just to quickly erase the content.

Formatting is not a 100% safe way to destroy confidential

data. Standard formatting only marks the formatted area

as available space and deletes the address to find the files

again. The recovery of formatted or even overwritten

data may still be possible with special recovery tools

and software.

Digital rights management (DRM) technologies may

prevent some back-up data from being restored. Contact

your service provider for more information about DRM

used for your content.

DRM protected content comes with a certificate that gives

you specified rights to use the content.

If your device has WMDRM protected content and you

need to format the hard drive of your device, both the

certificate and the content will be lost. This may limit your

ability to use the same content on your device again. For

more information, contact your service provider.

If your device has OMA DRM protected content, the only

way to back up both the DRM certificates and the content

is to use the backup feature of Nokia PC Suite. Other

transfer methods may not transfer the certificates, which

means that in case of file corruption, you cannot recover

the DRM certificate.

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Nokia N91 User's Guide Page 106

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