Windowsで起動可能なUSBを作成中にエラーが発生しました。

私はWindows 10を使用しており、チュートリアルの正確な手順に従い、すべてが順調に進んでいます。ここ。 32GB USBスティック使用中のエラー：デバイスへのアクセスが拒否されました。ログは次のとおりです。

Rufus x86 v3.9.1624
Windows version: Windows 10 64-bit (Build 18363.720)
Syslinux versions: 4.07/2013-07-25, 6.04/pre1
Grub versions: 0.4.6a, 2.04
System locale ID: 0x0409 (en-US)
Will use default UI locale 0x0409
SetLGP: OpenLocalMachineGPO failed - error 80004005
Localization set to 'en-US'
Notice: The ISO download feature has been deactivated because 'Check for updates' is disabled in your settings.
Found USB 3.0 device 'SMI USB DISK USB Device' (090C:2000)
1 device found
No volume information for drive 0x81
Disk type: Removable, Disk size: 32 GB, Sector size: 512 bytes
Cylinders: 3849, Tracks per cylinder: 255, Sectors per track: 63
Partition type: MBR, NB Partitions: 0
Disk ID: 0x49BEA369
Drive has a Windows 7 Master Boot Record
Scanning image...
ISO analysis:
  Image is an ISO9660 image
  Will use '/isolinux/isolinux.cfg' for Syslinux
  Detected Syslinux version: 6.03/20171017 (from '/isolinux/isolinux.bin')
Disk image analysis:
  Image has an unknown Master Boot Record
  Image is a bootable disk image
ISO label: 'Ubuntu 18.04.4 LTS amd64'
  Size: 2.0 GB (Projected)
  Has a >64 chars filename
  Uses: Syslinux/Isolinux v6.03
  Uses: EFI
  Note: This ISO uses symbolic links, which will not be replicated due to file system limitations.
  Because of this, some features from this image may not work...
Using image: ubuntu-18.04.4-desktop-amd64.iso (2.0 GB)
Will reuse 'ldlinux.sys' and 'ldlinux.bss' from './rufus_files/rufus_files/syslinux-6.03/20171017/' for Syslinux installation

Format operation started
Requesting disk access...
Will use 'D:' as volume mountpoint
Deleting partitions...
No partition to delete on disk '\\?\PhysicalDrive1'
Opened \\.\PhysicalDrive1 for exclusive write access
Analyzing existing boot records...
Drive has a Windows 7 Master Boot Record
Clearing MBR/PBR/GPT structures...
Erasing 128 sectors
Deleting partitions...
Partitioning (MBR)...
● Creating Main Data Partition (offset: 1048576, size: 29.5 GB)
Closing existing volume...
Waiting for logical drive to reappear...
Formatting (FAT32)...
Using cluster size: 16384 bytes
Quick format was selected
Access denied
[0x00000006] The handle is invalid. - Retrying...
[0x00000006] The handle is invalid. - Retrying...
[0x00000006] The handle is invalid. - Retrying...
[0x00000006] The handle is invalid. - Retrying...
Format error: Access to the device is denied.
Re-mounted volume as D: after error

Found USB 3.0 device 'SMI USB DISK USB Device' (090C:2000)
1 device found
No volume information for drive 0x81
Disk type: Removable, Disk size: 32 GB, Sector size: 512 bytes
Cylinders: 3849, Tracks per cylinder: 255, Sectors per track: 63
Partition type: MBR, NB Partitions: 1
Disk ID: 0x095DA4A1
Drive has a Zeroed Master Boot Record
Partition 1:
  Type: FAT32 LBA (0x0c)
  Size: 29.5 GB (31665946624 bytes)
  Start Sector: 2048, Boot: Yes
Closed Windows format prompt
Found USB 3.0 device 'SMI USB DISK USB Device' (090C:2000)
1 device found
No volume information for drive 0x81
Disk type: Removable, Disk size: 32 GB, Sector size: 512 bytes
Cylinders: 3849, Tracks per cylinder: 255, Sectors per track: 63
Partition type: MBR, NB Partitions: 1
Disk ID: 0x095DA4A1
Drive has a Zeroed Master Boot Record
Partition 1:
  Type: FAT32 LBA (0x0c)
  Size: 29.5 GB (31665946624 bytes)
  Start Sector: 2048, Boot: Yes

注：.isoファイルはマイダウンロードフォルダに保存され、私のUSBスティックは新製品で空です。ところが、いざ入れてみるとこのコンピュータではフォーマットができませんね(たとえWindows 8コンピュータでは動作するが)。昨日は128GBのUSBで試してみましたが、大きすぎる可能性があり、デバイスが処理できないと言いました。

ルーパスに何の問題があるのでしょうか？