sorry durty english. here is english env..
Format to USB
1. check devices
also sdc is your usb devices
$ df
Filesystem 1K-blocks Used Available Use% Mounted on
udev 65895136 0 65895136 0% /dev
tmpfs 13184664 2796 13181868 1% /run
/dev/sdb2 459924552 12668192 423823708 3% /
tmpfs 65923304 47888 65875416 1% /dev/shm
tmpfs 5120 4 5116 1% /run/lock
tmpfs 65923304 0 65923304 0% /sys/fs/cgroup
...
/dev/loop5 31104 31104 0 100% /snap/snapd/9279
/dev/sdb1 523248 7944 515304 2% /boot/efi
tmpfs 13184660 32 13184628 1% /run/user/1000
/dev/sdc3 56321568 2180864 54140704 4% /media/fifi/440B-AC16
/dev/sdc1 2719744 2719744 0 100% /media/fifi/Ubuntu 20.04.1 LTS amd64
- /dev/sdc : target device
- /dev/sdc1 : partition
- /dev/sdc3 : partition
2. unmount
unmount the target device (not partition)
sudo umount /dev/sdc
3. delete partition and make new
$ sudo fdisk /dev/sdc
Welcome to fdisk (util-linux 2.34).
Changes will remain in memory only, until you decide to write them.
Be careful before using the write command.
Command (m for help): p
Disk /dev/sdc: 56.33 GiB, 60472426496 bytes, 118110208 sectors
Disk model: Transcend 64GB
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: dos
Disk identifier: 0x56f48570
Device Boot Start End Sectors Size Id Type
/dev/sdc1 * 0 5439487 5439488 2.6G 0 Empty
/dev/sdc2 5017392 5025327 7936 3.9M ef EFI (FAT-12/16/32)
/dev/sdc3 5439488 118110207 112670720 53.7G 83 Linux
Command (m for help): d
Partition number (1-3, default 3): 1
Partition 1 has been deleted.
Command (m for help): d
Partition number (2,3, default 3):
Partition 3 has been deleted.
Command (m for help): d
Selected partition 2
Partition 2 has been deleted.
Command (m for help): d
No partition is defined yet!
Command (m for help): d
No partition is defined yet!
Command (m for help): p
Disk /dev/sdc: 56.33 GiB, 60472426496 bytes, 118110208 sectors
Disk model: Transcend 64GB
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: dos
Disk identifier: 0x56f48570
Command (m for help): n
Partition type
p primary (0 primary, 0 extended, 4 free)
e extended (container for logical partitions)
Select (default p): p
Partition number (1-4, default 1):
First sector (2048-118110207, default 2048):
Last sector, +/-sectors or +/-size{K,M,G,T,P} (2048-118110207, default 118110207):
Created a new partition 1 of type 'Linux' and of size 56.3 GiB.
Command (m for help): t
Selected partition 1
Hex code (type L to list all codes): c
Changed type of partition 'Linux' to 'W95 FAT32 (LBA)'.
Command (m for help): a
Selected partition 1
The bootable flag on partition 1 is disabled now.
Command (m for help): p
Disk /dev/sdc: 56.33 GiB, 60472426496 bytes, 118110208 sectors
Disk model: Transcend 64GB
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: dos
Disk identifier: 0x56f48570
Device Boot Start End Sectors Size Id Type
/dev/sdc1 2048 118110207 118108160 56.3G c W95 FAT32 (LBA)
Command (m for help): w
The partition table has been altered.
Calling ioctl() to re-read partition table.
Syncing disks.
format
fifi@fifi-gpu:~$ sudo mkfs.msdos -F 32 /dev/sdc1
mkfs.fat 4.1 (2017-01-24)
fifi@fifi-gpu:~$ sudo mkfs.msdos -F 32 /dev/sdc1 -n win10
mkfs.fat 4.1 (2017-01-24)
mkfs.fat: warning - lowercase labels might not work properly with DOS or Windows
Burn Windows Boot Disk
mount and copy
$ sudo mount -t auto -o loop ~/Downloads/Win10_2004_Japanese_x64.iso /mnt/win10/
mount: /mnt/win10/: /home/fifi/Downloads/Win10_2004_Japanese_x64.iso is already mounted.
fifi@fifi-gpu:/media/fifi$ cd /mnt/win10/
fifi@fifi-gpu:/mnt/win10$ ls
autorun.inf boot bootmgr bootmgr.efi efi setup.exe sources support
fifi@fifi-gpu:/mnt/win10$ sudo df
Filesystem 1K-blocks Used Available Use% Mounted on
udev 65895136 0 65895136 0% /dev
tmpfs 13184664 2788 13181876 1% /run
/dev/sdb2 459924552 12672800 423819100 3% /
tmpfs 65923304 111372 65811932 1% /dev/shm
tmpfs 5120 4 5116 1% /run/lock
tmpfs 65923304 0 65923304 0% /sys/fs/cgroup
/dev/loop0 56320 56320 0 100% /snap/core18/1880
/dev/loop2 223232 223232 0 100% /snap/gnome-3-34-1804/60
/dev/loop1 56704 56704 0 100% /snap/core18/1885
/dev/loop4 30720 30720 0 100% /snap/snapd/8790
/dev/loop3 51072 51072 0 100% /snap/snap-store/467
/dev/loop6 261760 261760 0 100% /snap/gnome-3-34-1804/36
/dev/loop7 63616 63616 0 100% /snap/gtk-common-themes/1506
/dev/loop5 31104 31104 0 100% /snap/snapd/9279
/dev/sdb1 523248 7944 515304 2% /boot/efi
tmpfs 13184660 32 13184628 1% /run/user/1000
/dev/loop8 5063494 5063494 0 100% /mnt/win10
/dev/sdc1 59039584 32 59039552 1% /media/fifi/win10
fifi@fifi-gpu:/mnt/win10$ sudo cp /mnt/win10/* /media/fifi/win10/
cp: -r not specified; omitting directory '/mnt/win10/boot'
cp: -r not specified; omitting directory '/mnt/win10/efi'
cp: -r not specified; omitting directory '/mnt/win10/sources'
cp: -r not specified; omitting directory '/mnt/win10/support'
fifi@fifi-gpu:/mnt/win10$ sudo cp -r /mnt/win10/* /media/fifi/win10/
memo
so easy. ubuntu