Following the LX2 Quick Start Guide, after doinf load/write to eMMC, change switch, reboot:
root@localhost:~# fdisk /dev/mmcblk1
Command (m for help): p
Disk /dev/mmcblk1: 59.22 GiB, 63585648640 bytes, 124190720 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: 0x30303030
Device Boot Start End Sectors Size Id Type
/dev/mmcblk1p1 131072 847871 716800 350M 83 Linux
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):
First sector (2048-124190719, default 2048): 131072
Last sector, +/-sectors or +/-size{K,M,G,T,P} (131072-124190719, default 124190719):
Created a new partition 1 of type ‘Linux’ and of size 59.2 GiB.
Partition #1 contains a ext4 signature.
Do you want to remove the signature? [Y]es/[N]o: N
Command (m for help): w
The partition table has been altered.
Syncing disks.
root@localhost:~# resize2fs /dev/mmcblk1p1
resize2fs 1.45.5 (07-Jan-2020)
resize2fs: Filesystem has unsupported feature(s) (/dev/mmcblk1p1)
root@localhost:~# df
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/root 325599 271959 31624 90% /
devtmpfs 6040404 0 6040404 0% /dev
tmpfs 7109588 0 7109588 0% /dev/shm
tmpfs 1421920 832 1421088 1% /run
tmpfs 5120 0 5120 0% /run/lock
tmpfs 7109588 0 7109588 0% /sys/fs/cgroup
tmpfs 1421916 0 1421916 0% /run/user/0
root@localhost:~# resize2fs -f /dev/mmcblk1p1
resize2fs 1.45.5 (07-Jan-2020)
resize2fs: Filesystem has unsupported feature(s) (/dev/mmcblk1p1)