My boss laptop Dell 5460 coming with OEM Windows 8 got hard disk with bad sector.
Windows always freeze and she never created image,never did Dell backup nor did Windows backup and the worst thing she ask me to repair her laptop.
First I check the HDD laptop model is Seagate Momentus Thin 500GB so I asked her to bought new HDD with same model.
Clone HDD with bad sector to new HDD using Clonezilla
Both HDD are same model so you must remember defective HDD serial number and new HDD serial number.
1) Download Clonezilla from here I’m using alternative stable releases – 20150608-vivid (Ubuntu based).
2) Burn Clonezilla to a CD or create a bootable usb flashdrive for Clonezilla.
I create a bootable usb flashdrive for Clonezilla using YUMI multiboot,you can download here