Important.
If you choose to install Safedrive then you should know the following.

You will need to supply a key value for safedrive, this is your unique
value which ensures that your files cannot be decrypted with another version
of safedrive.The key value consists of ten characters in the range a..z.
You will have to supply a password for access to safedrive.
You will be required to specify a drive letter for Safedrive, Do not
specify a drive letter that already exists or the letters a..f as 
these letters are used by ide devices and floppy drives.
The only way to change you password, key value or drive letter is to
reinstall safedrive. if you wish to be able to decrypt any files
encrypted with your previous installation of safedrive then you must
use the same key value.