partitioning - Mint Linux can't find unallocated ssd disk sapce

My laptop DELL PRECISION 3530 has 1 TB SSD. First I installed Windows 10 in 300 GB, and left the rest unallocated. I planned to install Mint Linux in the rest of the space.

When I boot Mint Linux by a Live USB and try to install it, it doesn't find unallocated space. It shows only 7 GB free space, not enough for mint installation. What is wrong and how to fix it?

Here is the output

mint@mint:~$ sudo sfdisk -l
Disk /dev/loop0: 1.7 GiB, 1859526656 bytes, 3631888 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes    
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/sda: 7.5 GiB, 8074035200 bytes, 15769600 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x39f675eb

 Device     Boot   Start     End Sectors  Size Id Type
 /dev/sda1  *          0 3793663 3793664  1.8G  0 Empty

Answer

I found the actual issue. It is mainly BIOS setup for the latest model laptops comes with UEFI and secure boot options. I had to follow the following options:

1. select UEFI enable it


2. Secure boot disable it.


3. QuickBoot/FastBoot disable it.


4. Intel Smart Response Technology (SRT) disable it.


5. SATA has multiple options. RAIDR, AHCI, etc. Select AHCI mode.

Then boot the Linux infestation by DVD or USB. Well, the latest laptop comes without any CD/DVD ROM.

Now you should see the whole SSD. To verify it just lunch GParted.