You have started multiple threads with questions that make no sense and demonstrate
a lack of understanding of basic Linux concepts.
Instead of beating around the bush, it would be better if you clearly stated what you are trying to accomplish,
what you have tried, and what does not work.
There is an old computer saying.
Garbage In Garbage Out.
You will not get good answers with bad questions.
# ok from begining
# in tc standard user named tc
dd if=/dev/sdb1 of=sdb1
hexedit /dev/sdb1 # make change and save
hexedit /dev/sdb1 # check if change are correctly written
dd if=sdb1 of=/dev/sdb1
hexedit /dev/sdb1 # check if change are restored
# and changes are restored it is a good thing for an recovery linux
# but why writing to partition without sudo su
# ok from begining the only question from which version of TC this is possible