Many 1TB flash drives are fake and do not contain 1TB of memory.
If you cannot see two partitions using a utility such as EaseUS Home Partition Master or RMPrepUSB - Drive Info, then you probably have a fake!
If it was very cheap you probably have a fake.
Test it using FakeFlashTest.exe or RMPrepUSB.exe - Quick Size Test
If you cannot see two partitions using a utility such as EaseUS Home Partition Master or RMPrepUSB - Drive Info, then you probably have a fake!
If it was very cheap you probably have a fake.
Test it using FakeFlashTest.exe or RMPrepUSB.exe - Quick Size Test