am62xx-evm login: root
root@am62xx-evm:~# fdisk /dev/mmcblk0

Welcome to fdisk (util-linux 2.35.1).
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/mmcblk0: 14.84 GiB, 15913189376 bytes, 31080448 sectors
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: 0x00000000

Device         Boot Start      End  Sectors  Size Id Type
/dev/mmcblk0p1          1 31080447 31080447 14.8G ee GPT

Command (m for help): n
All space for primary partitions is in use.

Command (m for help): d
Selected partition 1
Partition 1 has been deleted.

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): 1
First sector (2048-31080447, default 2048): 2048
Last sector, +/-sectors or +/-size{K,M,G,T,P} (2048-31080447, default 31080447): 31080447

Created a new partition 1 of type 'Linux' and of size 14.8 GiB.
Partition #1 contains a ext4 signature.

Do you want to remove the signature? [Y]es/[N]o: Y

The signature will be removed by a write command.

Command (m for help): w
The partition table has been altered.
[  137.538673]  mmcblk0: p1
Calling ioctl() to re-read partition table.
Syncing disks.

root@am62xx-evm:~# mmc part
-sh: mmc: command not found
root@am62xx-evm:~# ls -l /dev/mmcblk*
brw-rw----    1 root     disk      179,   0 May 14 23:06 /dev/mmcblk0
brw-rw----    1 root     disk      179,  32 May 14 23:04 /dev/mmcblk0boot0
brw-rw----    1 root     disk      179,  64 May 14 23:04 /dev/mmcblk0boot1
brw-rw----    1 root     disk      179,   1 May 14 23:06 /dev/mmcblk0p1
crw-------    1 root     root      237,   0 May 14 23:04 /dev/mmcblk0rpmb
brw-rw----    1 root     disk      179,  96 May 14 23:04 /dev/mmcblk1
brw-rw----    1 root     disk      179,  97 May 14 23:04 /dev/mmcblk1p1
brw-rw----    1 root     disk      179,  98 May 14 23:04 /dev/mmcblk1p2
root@am62xx-evm:~# mkfs.ext4 /dev/mmcblk0p1
mke2fs 1.45.7 (28-Jan-2021)
Discarding device blocks: done
Creating filesystem with 3884800 4k blocks and 972944 inodes
Filesystem UUID: d8caeabe-1b04-4a0d-a381-f135f58d81d7
Superblock backups stored on blocks:
        32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208

Allocating group tables: done
Writing inode tables: done
Creating journal (16384 blocks): done
Writing superblocks and filesystem accounting information: done

root@am62xx-evm:~#