please i realy need help
i have a nand flash GD5F1GQ5UEYIG from gigadevice company
the originale fille writed on the nand it's size is 139MB
but where i try to write it on other memorys it's write just 135MB and i try many other models but always the same problem only 135MB realy writed
(The nand size is 01Gb)
can any one explain it why

 

Does it actually fail to write or is the reported size just different.
https://www.businesstechweekly.com/tech-insights/size-vs-size-on-disk/#:~:text=When you see the size,file on a hard drive.