Help with code Error/fs.copy,fs.delete

fs.delete("startup")
fs.copy("disk/startup", "startup")
os.pullEvent = os.pullEventRaw
local side = "right"
local password1 = "********"
local password2 = "********"
local password3 = "********"
local password4 = "********"
local passwordadmin = "********"
term.clear()
sleep(1)
print("Admin console Lock Loading...")
sleep(2)
print("Your console has been locked by an admin")
sleep(1)
print("Please contact an admin to have it unlocked.")
sleep(2)
print("Admin please enter the unlock code.")
write("Code: ")
local input = read("*")
if input == password1 then
term.clear()
term.setCursorPos(1,1)
print("Password correct!")
print("Computer unlocking...")
print("To remove this lock please edit startup and delete the code")
os.pullEvent(terminate)
end
if input == password2 then
term.clear()
term.setCursorPos(1,1)
print("Password correct!")
print("Computer unlocking...")
print("To remove this lock please edit startup and delete the code")
os.pullEvent(terminate)
end
if input == password3 then
term.clear()
term.setCursorPos(1,1)
print("Password correct!")
print("Computer unlocking...")
print("To remove this lock please edit startup and delete the code")
os.pullEvent(terminate)
end
if input == password4 then
term.clear()
term.setCursorPos(1,1)
print("Password correct!")
print("Computer unlocking...")
print("To remove this lock please edit startup and delete the code")
os.pullEvent(terminate)
end
if input == passwordadmin then
term.clear()
term.setCursorPos(1,1)
print("Password correct!")
print("Computer unlocking...")
print("To remove this lock please edit startup and delete the code")
os.pullEvent(terminate)
else
term.clear()
term.setCursorPos(1,1)
print("Password incorrect User please donot try to bypass this Block!")
sleep(2)
os.shutdown()
end