尝试将 CentOS 6.5 的 Live ISO 映像安装到 USB 设备时遇到空间不足的问题。文章详细介绍了安装过程中报错的原因，并解释了 --overlay-size-mb 和 --home-size-mb 参数的作用。
# ./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...
详细的三个参数：
-
--overlay-size-mb 依赖于USB设备，占用USB的空间
-
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.
本文转自fengyuzaitu 51CTO博客，原文链接：http://blog.51cto.com/fengyuzaitu/1570415，如需转载请自行联系原作者
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