Hello i just installed ubuntu i didn't choose first option that will erase all your data
i choose /dev/sda2 which is my hdd drive 1TB and mounted to /home and my sdd which is 256gb mounted to / and now i can't find my files and folders on my hdd drive the hdd drives shows that there is 931gb size but my hdd drive is 1TB and i think this 80gb of missing size is my files and folders but don't know how to recover it
fdisk -l
Disk /dev/nvme0n1: 238.49 GiB, 256060514304 bytes, 500118192 sectors
Disk model: WDC PC SN520 SDAPNUW-256G-1002          
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: gpt
Disk identifier: 56022F46-0B41-4F6D-9FC2-DEF81785F2B4
Device           Start       End   Sectors   Size Type
/dev/nvme0n1p1    2048   1320959   1318912   644M EFI System
/dev/nvme0n1p4 1320960 500117834 498796875 237.9G Microsoft basic data
Disk /dev/sda: 931.53 GiB, 1000204886016 bytes, 1953525168 sectors
Disk model: ST1000LX015-1U71
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: 13FE9E3E-6B1B-4E46-A83C-11B3E4882D82
Device     Start        End    Sectors   Size Type
/dev/sda1     34      32767      32734    16M Microsoft reserved
/dev/sda2  32768 1953521663 1953488896 931.5G Microsoft basic data
Fdisk command shows this but don't know how to fix this problem
Thanks