dzdzvcsd,

in case of SCCM error 0x800700A1 do the following:

diskpart
list disk                (list all disks on system)
select disk 0            (0 being the disk to setup)
clean                    (wipes the disk)
create partition primary (creates windows partition)
select partition 1       (selects the first partition)
format quick fs=NTFS     (sets format of primary partition)
assign letter C          (assigns the drive letter to "C")
exit                     (exits diskpart)

test

fsdfsdfsdf

# This is the network config written by 'subiquity'
network:
  ethernets:
    enp0s3:
      dhcp4: yes
      nameservers:
          addresses: [8.8.8.8,8.8.4.4]
  version: 2

[*.cs]
indent_style = space
indent_size = 2
tab_width = 2
csharp_new_line_before_open_brace = none