dual boot on M-NotePC3

debian、dual boot、win10
  1. Shrink windows(C:) to 144.38GB leaving 78.13GB unallocated.
  2. Prepare Win recovery usb for safety on ADATA-UV150(RedSort)(8.44/28.8GB)(nominal32GB).
  3. Important!!:Win10高速スタート解除；コントロールパネル➝ハードウェアとサウンド➝電源オプション➝システム設定➝現在利用可能でない設定を変更➝高速スタートアップ：uncheck→変更保存：
  4. Insert Debian Install USB (ELECOM MF-KCU3A?)
  5. BIOS設定：1.secure boot :disabled 2. Boot optionPriorities:Top Boot Option #1:[UEFI:ELECOM MF-KCU3A1100,Partition 1]; UEFI setting: all enabled.→Boot: UEFI Boot: Enabled
  6. Debian installer started successfully.
  7. wifidriver preparation is advised, but you can neglect this and just go ahead.
  8. Mirror cannot be used by error. Proceed without mirror.
  9. Selected all the available softwares.
  10. Select default display manager: gdm3