Much less storage shown when creating a partition then is actually available

[nickward12097]

I recently wanted to partition my hard drive (1TB HDD operating as my D drive, I also have an almost full 128GB SSD operating as my C drive) to dual boot Ubuntu and Windows. When I went to create the partition, it said that I had less than 30 GBs available to partition. I have more than 450 GBs of storage left, according to Windows. I tried defragging and whatnot so I'm not sure what it could be... I have also noticed that when I go to download games it takes unusually long to allocate disk space.

Thanks in advance for any help!

 

[jojesa]

I recently wanted to partition my hard drive (1TB HDD operating as my D drive, I also have an almost full 128GB SSD operating as my C drive) to dual boot Ubuntu and Windows. When I went to create the partition, it said that I had less than 30 GBs available to partition. I have more than 450 GBs of storage left, according to Windows. I tried defragging and whatnot so I'm not sure what it could be... I have also noticed that when I go to download games it takes unusually long to allocate disk space.

Thanks in advance for any help!

First, a solid-state drive (SSD) performance will slows down as it becomes full. To avoid performance issues, you should have 20% free of its total capacity.
You might need to shrink the current partition before you can create another partition and be careful since you could delete the data on the drive if you are not careful.
Use either Disk Management, Diskpart or EaseUS Partition Master.

 

[TJ Hooker]

In order to create a partition you can only use space that's not already part of a different partition. If almost all of your HDD is included in an existing partition, you need to shrink that partition to make more room for the new one.