I recently dual booted linux mint on my laptop, and I came across the infinite squashfs error (an infinite amount of “SQUASHFS error: Unable to read page” and "SQUASHFS error: Unable to read data counting up, I think because I took out the usb and pressed enter too quickly) I couldn’t do anything, so I shut down and restarted, upon restart, its running fine? No corruption.
Edit: I reinstalled and waited a while after unplugging before and enter did not work, I hit escape and this happened again, though text is bigger and slower
Yep, that can happen. At that point everything installation related should already be unmounted, so just power it off hard and be done.
Or just press AltGr-Print-S to emergency sync the disks and AltGr-Print-B to the reboot hard, magic sysrq keys.