boot of os10 fails on XO-1, complaining of lack of space

[Eduardo H. Silva]

After arriving my replacement charger, I decided to try the new 12.1.0
OS. os10 is the newest, but it's 1GB of size, which almost completely
fills the internal space of the XO-1, failing to boot:

dracut: Mounted root filesystem mtd0
mkdir: can't create directory '/sysroot/.private': No space left on device
mkdir: can't create directory '/sysroot/security/.private': No space
left on device
System isn't partitioned, won't resize
ln: /sysroot/versions/running: No space left on device
Failure condition in initramfs

dracut Warning: Signal caught!
dracut Warning: Signal caught!

Dropping to debug shell.

/bin/sh: can't access tty; job control turned off
dracut:/#


Eduardo