Super Talent's Ram-Disk USB Boasts Speeds of “Over 4,000MB/s” – Techgage
What Is RAM Disk & Whether You Should Pick One - MiniTool Partition Wizard
Sshrd_script won't create ramdisk for iPhone 6 8.4.1 so I tried creating a 12.0 ramdisk instead which worked. However, mount_filesystems doesn't work. My guess is because it tries to mount as apfs?
Using USB stick as swap (or RAMDISK) in Ubuntu | Ravi S. Iyer Misc. Tech.