After a HDD failure I upgraded with a new one bigger in size. I used Norton Ghost 8.0 (I'm new to Linux) to clone the HDD to the new one, sector by sector type of cloning, nothing else worked.
After booting the system from the new HDD I tried to resize the home partition to use the whole HDD using QTParted but it wont work, but finally worked with cfdisk.
Now if I use cfdisk or fdisk I see the correct size HDD but Konqueror does not recognize the whole HDD just the old size of the partition and I got at one point the message that the disk is full.

Any ideas please?

The fdisk -l output is:

Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0xd56c44d1

Device Boot Start End Blocks Id System
/dev/sdb1 * 1 851 6835626 83 Linux
/dev/sdb2 852 121601 969924375 f W95 Ext'd (LBA)
/dev/sdb5 852 1181 2650693+ 82 Linux swap / Solaris
/dev/sdb6 1182 121601 967273618+ 83 Linux

The df -h output is:

Filesystem Size Used Avail Use% Mounted on
/dev/sdb1 6.5G 5.0G 1.2G 81% /
tmpfs 2.0G 0 2.0G 0% /lib/init/rw
udev 10M 168K 9.9M 2% /dev
tmpfs 2.0G 0 2.0G 0% /dev/shm
shmfs 2.0G 12K 2.0G 1% /lib/init/rw/splashy
/dev/sdb6 65G 38G 24G 62% /home
/dev/sda5 204G 181G 23G 90% /mnt/Data


cfdisk output:

sdb1 Boot Primary Linux ext3 6999.72
sdb5 Logical Linux swap / Solaris 2714.35
sdb6 Logical Linux ext3 990488.22

You may need this http://linux.die.net/man/8/resize2fs.
A partition is just raw disk space, you need to create (new disk) or extend (in your case most likely) the actual filesystem eg ext3 to use the whole partition.
I'd be wary of cloning a dead disk though, you'll have picked up any errors as well. Any chance you've got a clean backup?

resize2fs worked flawless

Thank you very much.