We need to know what Mac model and year you have to see if it supports Sierra.
Here is a list of Macs that support Sierra:
https://support.apple.com/kb/sp742?locale=en_US&viewlocale=en_US
i can go to the apple logo and pull up the about this mac info but it only shows macbook pro 15" glossy. it doesn't say a year. LION is loaded... i am very new to mac and don't know much about them yet. it shows no updates available. I have no problem paying to update software but want to make sure it will work before i spend money just to throw it away. other than the about this mac option is there somewhere else i can find out what year is was produced? or is there an update that the year doesn't matter?
[doublepost=1483109974][/doublepost]Model Name: MacBook Pro
Model Identifier: MacBookPro1,1
Processor Name: Intel Core Duo
Processor Speed: 2 GHz
Number of Processors: 1
Total Number of Cores: 2
L2 Cache: 2 MB
Memory: 2 GB
Bus Speed: 667 MHz
Boot ROM Version: MBP11.0055.B08
SMC Version (system): 1.2f10
Serial Number (system): W86177J7VWW
Hardware UUID: 00000000-0000-1000-8000-0016CB8DAF15
Sudden Motion Sensor:
State: Enabled