Unable to access full hard drive

[Cobbster88]

Hi I’ve got an Hp Envy laptop. Bought with 1TB memory but I  only seem to have about 100 GB available and that’s used up so can’t save any new files down. I believe the other 900 GB is somewhere in the hard drive but no idea how to access it, had a couple of techy friends look too but they’ve also drawn a blank. Anyone know how to access the main hard drive? Thanks

[TheOldMan]

Assuming you are referring to the size of the hard drive as 1TB, which is common now.

Open Disk Management to see the hard drive.  Here is a guide with illustrations for what to look for after opening Disk Management

https://www.digitalcitizen.life/how-manage-your-disks-using-disk-management-utility/

The first actual picture shows what you should see on a typical system.  Assuming you do not have a virtual machine running, ignore that portion.  A typical HP computer having only a 1TB hard drive will show the C: drive with several partitions and that may also be showing a D drive where the Recovery Partition will be.  Windows 10 uses several partitions marked hidden for system use, those will also show up in the Drive window.  The Disk 0 is usually the C: drive where Windows sets up all of the partitions it needs.  Disk 1 is typically the extra disk if there are more then one drive or a DVD drive.

It might be more helpful for later advise to post a screenshot of the Disk Management as viewed by you from your PC.