[muglo] back up HD

files, a problem was mentioned about even the back up failing 
sometimes. I came across this note when looking into Carbon Copy 
Cloner and thought either this or a similar problem may cause 
difficulty when backing up files.
        Even if you aren't using Carbon Copy Cloner, will a similar 
problem with permissions and changing permissions cause problems when 
backing up files with something like Superduper, or Time 
Machine?....Doug
Installing Carbon Copy Cloner
Carbon Copy Cloner is distributed via a disk image -- all 
documentation and required components are contained within the 
application on this disk image. You may copy CCC to your Applications 
or Utilities folder, or anywhere else you prefer.

Working with FileVault home directories
FileVault protects the contents of your home directory by enclosing 
it in an encrypted disk image. When you log in, the encrypted disk 
image is unlocked via your login and password and mounted for use as 
your home directory. Mounted disk images pose an interesting problem 
to incremental backup utilities. By simply being mounted and accessed 
(e.g. via browsing the contents), the content of a disk image, and 
thus the disk image file itself, is modified. If you run CCC while 
logged in to a FileVault-protected account, there is a strong chance 
that the FileVault disk image will be modified while it is being 
backed up, resulting in a corrupted version of the disk image on your 
backup volume. Also, because the contents of your FileVault-protected 
home directory are technically on another volume, CCC will not back 
up the contents of your home directory when backing up your root 
filesystem (e.g. your boot drive).
For these reasons, you should either exclude your FileVault disk 
image file from your backup routine while logged into a 
FileVault-protected account (and set up a separate routine for 
backing up the contents of your home directory), or you should only 
run CCC while logged into an account that is not protected by 
FileVault.


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