Sam Lewis said:
I recently used Norton ghost to try and image a fresh install of
XP/Programs only to be locked into a "PC DOS" boot partition.
Symantec helpdesk informed me that Ghost is "tricky" to use
with NTFS partitions....My overall experience with Symantec
products has been dissapointing.
So is there a better imaging program out there? Could the
native XP "Backup whole computer" be used for same
purpose ( restore OS with installed progs and SP's)?
BTW What really is the difference betweem imaging,cloning
and backing up?
Ghost is normally a reliable program, though for highest reliability it
should be used from a boot floppy, not run from within Windows. As you've
noticed, when run from Windows it reboots into DOS to do its work and (is
supposed to) reboot back into Windows when it finishes. It should be
intuitive that avoiding the before-and-after transitions can improve
reliability.
A clone is a *partition* that is an exact copy of the source partition --
boot sector, directories, and all files -- copied sector-by-sector. A copy
is like a clone, but doesn't necessarily imply that everything is
sector-by-sector identical -- all the files will be the same but may be in a
different order or different places on disk.
An image is a *file* containing a compressed snapshot of the source
partition, which can later be extracted to a blank area of hard disk space
to recreate a clone of the original. Think of it like zipfiles, just on a
grander scale. You probably know that entire directories (er, "folders") of
files can be compressed into a single zipfile, and you can later use WinZip
or similar to unzip everything to restore all the encapsulated files and
even the directory structure. An image is like a zipfile -- it's not an
exact duplicate of the original files, but it contains within it the means
to restore exact duplicates.
A backup is really a different issue -- a clone, copy, or image can be a
backup, it's instead a matter of how you use them. "Backing up" just refers
to some method of saving data and being able to restore/recover it when
needed. A backup could include specific files, a whole partition, or even a
whole disk.
So which is better -- a clone or an image? Well, you generally do not need
to create a clone/copy unless you are ready to use it now. For example, if
you're replacing your hard disk, you want a clone now, so if you make an
image you'd just have to extract it immediately anyway. In contrast, an
image is more appropriate if you are just making a backup to store away in
case you might need to restore your original later. Then when you need it,
you extract it to restore the enclosed partition on a hard disk. An image is
much smaller -- a 20GB partition that is half full might fit in a 5GB image
file, but if cloned it would still be 20GB. An image can also be saved on
CDR or DVD-R (remember, it's a file), but a clone of the partition cannot.