How do I create arch linux partitions if fdisk says they're busy?

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[0] [0] fifn2

[2020-04-16 20:30:43]

[ linux arch-linux partition ]

[ https://unix.stackexchange.com/questions/580548/how-do-i-create-arch-linux-partitions-if-fdisk-says-theyre-busy ]

I'm going through the Arch Linux Installation Guide ^[1], but when I got to the part where I needed to create partitions on /dev/sda, after inserting my live USB with the fdisk utility, the following happened.

I deleted all partitions on /dev/sda.
I created a partitions according to the table in the directions, but
When I tried to write the partitions, it gave me the error:

Failed to remove partition 1 from system: Device or resource busy
Failed to add partition 1 to system: Device or resource busy
Failed to add partition 2 from: system: Device or resource busy

What's going on? I know Arch Linux ain't easy, but I've got time.

fdisk -l outputs Output of fdisk -l enter image description here

[1] https://wiki.archlinux.org/index.php/Installation_guide

Could it be that /dev/sda is your USB stick and e.g. /dev/sdb is the one you want to partition? Check the output of fdisk -l. - Freddy

@Freddy fdisk -l doesn't output any more /dev/sdX s. - fifn2

So what is the output? Are any other drives detected? Is the target drive a SATA HDD/SSD or a NVMe SSD? Please add the details to your question. - Freddy

@Freddy I don't understand what SATA HDD/SSD or NVMe SSD mean. - fifn2

(1) It's about the interface type of your drive. If you have a newer NVMe device, then the device name would be /dev/nvmeXnY instead of /dev/sdX if it was correctly detected. This is why you should add the output of fdisk -l to your question. - Freddy

@Freddy I updated it with a pic of fdisk -l - fifn2

If you want to partition the SD/MMC card, use fdisk /dev/mmcblk0. - Freddy

@Freddy is that what I need to install Arch Linux on my hard drive? - fifn2