# ./livecd-iso-to-disk --home-size-mb 900 CentOS6.5.iso /dev/sda1
Verifying image...
Unable to fit live image + overlay on available space on USB stick
+ Size of live image: 232
+ Home overlay size: 900
---------------------------
= Requested: 1132
- Available: 932
---------------------------
= To fit, free or decrease requested size total by: 200
Cleaning up to exit...
詳細的三個參數：
--overlay-size-mb 依賴於USB設備，佔用USB的空間
This option sets the overlay size in megabytes. The overlay is additional storage available to the live operating system if the operating system supports it. The USB storage device must have enough free space for the image and the overlay.
--home-size-mb
Sets the home directory size in megabytes.
--unencrypted-home
Disables the encryption of the home directory.