I want to install Linux Mint along with Windows on my computer. I have two hard drives - 1 TB (which mint finds as sda) and 640 GB (which Mint finds as sdb).
The 1 TB hard disk has a 790 GB partition, and I want to split it and give Linux Mint a 100 GB partition. But, when I try to run the Linux Mint installer, it does not allow me to choose sda at all, just sdb (when I click on drop down, there is only one option there):
However, if I click on "partitioning tool", sda and my desired volume are there:
All file systems are NTFS.
I find manual partitioning to complex and am afraid to lose all my files. Is there a reason why automatic partitioning tools cannot see my sda disk? Is there a way to fix this?