58 posts
Mars
Posted 05 April 2012 - 02:52 AM
In my Dual Boot OS, I keep getting the error of "attempt to get length of nil". I get that error in line 38 (for i=1, #m, 1 do), which is part of a function which I have two of. It's the second of the same function which basicly is a menu with different options. Can anyone help me?
d=""
n=1
nn=1
if fs.exists("/DualBootOS") then d=""
elseif fs.exists("disk/DualBootOS") then d = "disk"
elseif fs.exists("disk2/DualBootOS") then d = "disk2"
elseif fs.exists("disk3/DualBootOS") then d = "disk3"
elseif fs.exists("disk4/DualBootOS") then d = "disk4"
elseif fs.exists("disk5/DualBootOS") then d = "disk5"
elseif fs.exists("disk6/DualBootOS") then d = "disk6"
end
function OSMenu(m)
while true do
term.clear()
term.setCursorPos(1,1)
print("Dual Boot OS")
term.setCursorPos(1,3)
for i=1, #m, 1 do
if i==n then print(i, " -->"..m[i]) else print(i, " ", m[i]) end
end
a, b= os.pullEventRaw()
if a == "key" then
if b==200 and n>1 then n=n-1 end
if b==208 and n<4 then n=n+1 end
if b==28 then break end
end
term.clear()
term.setCursorPos(1,1)
end
end
function installMenu(m)
while true do
term.clear()
term.setCursorPos(1,1)
print("Select operating system to install on computer")
term.setCursorPos(1,3)
for i=1, #m, 1 do
if i==nn then print(i, " -->"..m[i]) else print(i, " ", m[i]) end
end
a, b= os.pullEventRaw()
if a == "key" then
if b==200 and n>1 then nn=nn-1 end
if b==208 and n<4 then nn=nn+1 end
if b==28 then break end
end
term.clear()
term.setCursorPos(1,1)
end
end
function choice(f)
term.clear()
term.setCursorPos(1,1)
if f==1 then
if n==1 then print("CraftOS 1.3")
shell.run(d.."/DualBootOS/CraftOS/startup")
elseif n==2 then shell.run(d.."/DualBootOS/BlahOS/startup")
elseif n==3 then
installMenu(ioptions)
choice(2)
elseif n==4 then os.shutdown()
end
elseif f==2 then
term.clear()
term.setCursorPos(1,1)
if nn==1 then
if fs.exists("startup") then
writeLine("Deleting startup")
fs.delete("startup")
endwrite("[DONE]")
writeLine("Done installing, restarting computer")
print("3...")
sleep(1)
print("2...")
sleep(1)
print("1...")
sleep(1)
os.reboot()
else
print("You already have CraftOS installed on your computer!")
print("Try removing any disks with the file startup on the root.")
print("Shutting down")
sleep(3)
os.shutdown()
end
elseif nn==2 then shell.run(d.."/DualBootOS/BlahOS/install") elseif nn==3 then
elseif nn==3 then
elseif nn==4 then
end
end
end
local options={
"CraftOS 1.3",
"Blah OS 0.4",
"Install OS on computer",
"Exit"}
local ioptions={
"CraftOS 1.3",
"Blah OS 0.4",
"Dual Boot OS",
"Back"}
OSMenu(options)
choice(1)
