Is it possible to write an entire string or integer to the EEPROM at once instead of one byte at a time? If not, is there a way to record a "thing" of data into the arduino so that it stays permanent even when turned off?
One byte at a time, that's all you can do. No other way to store data that changes occasionally without external components.
However, we have things like FRAM, and SD cards.
clarkmcc:
Is it possible to write an entire string or integer to the EEPROM at once instead of one byte at a time?