Any ideas? How can I tell fedora to use 700GB, and do I have reformat to do this?

Filesystem            Size  Used Avail Use% Mounted on
/dev/mapper/vg_computer-lv_root
                      124G  3.9G  114G   4% /
/dev/sda1             194M   23M  162M  12% /boot
tmpfs                 995M  320K  994M   1% /dev/shm

Hyper-V settings:

Thank you,

pvdisplay -C:

  PV         VG        Fmt  Attr PSize   PFree
  /dev/sda2  vg_mycomp lvm2 a-   127.29G    0

lvdisplay -C:

  LV      VG        Attr   LSize   Origin Snap%  Move Log Copy%  Convert
  lv_root vg_mycomp -wi-ao 125.36G                                      
  lv_swap vg_mycomp -wi-ao   1.94G

vgdisplay -C:

  VG        #PV #LV #SN Attr   VSize   VFree
  vg_mycomp   1   2   0 wz--n- 127.29G    0