Most hard drives have a special jumper setting that allows you to limit their capacity to either 32 or 128 (137) gigabytes.
These include things like HDD firmware bugs (believe me, there are plenty of them). Run Windows Disk Management console and see if there is any free space that is not used by any partition. If steps 1—3 did not help, then we have a very cool tool that analyzes your hard drive’s LBA48, HPA and DCO status and recovers factory settings (see below).
Ouroborus, If HDD Capacity Restore does not see hard drives attached to S-ATA ports, then first of all I’d try to go into BIOS setup and locate S-ATA settings.
There has to be a way to switch S-ATA ports into “Normal” or “Compatible” or “Legacy” mode (as opposed to “Native”). Dmitry pedro: Sorry, you will have to remove the hard drive from the laptop and attach it to a desktop PC.
This area is used when you want to restore the original state of your desktop PC or laptop without using CD/DVD disks. In this case, to restore the original capacity of the hard drive with the HDD Capacity Restore tool that we include in this article, you may need to remove the hard drive out of its original PC/laptop and temporary attach it to another PC.
This is needed because most BIOSes will disable HPA/DCO operations to ensure that nothing can reset or damage that hidden area. This software allows you to set a Host protected area on your hard drive, so the hard drive will report less capacity to both BIOS and Operating System.
Usually this area is not bigger than 10 megabytes, so there is nothing to worry about.