You replaced the 320GB hard drive in your Acer Aspire desktop with a 512GB SSD.
You were able to copy the contents of the hard drive to the SSD with no problems and everything worked fine, but when I looked at the drive in “Computer”, the hard drive was 320GB instead of 512GB.
How to make Windows 7 show the full 512GB SSD hard drive space?
when you clone a hard drive to the SSD, it creates a partition on the SSD that matches the partition on the hard drive. Here’s a very easy fix:
Important: This tip involves resizing the primary partition on your boot drive, a procedure that can lead to data loss or even a PC that cannot boot if something goes wrong. By following the steps listed below, you do so at your own risk.
Steps to be followed:
1 – Create a system image backup of the SSD.
2 – Right-click on the Computer icon and click Manage .
3 – In the left pane, click Disk Management .
4 – Find the entry for your SSD. You should see a 320GB partition with the rest of the SSD marked as unused. Right click on the 320GB partition and click Extend Volume.
Once the above is done, the entire 512GB (Yes, actually some slightly smaller number) should show up in ‘Computer’ for drive C.