If it's the program described in http://macles.blogspot.com/2008/12/acer-aspire-one-aa1backup.html it's a full backup of the whole disk and can be made to another hard disk. But it's not really clear from your post that it is that program.
So better check the user manual about this particular piece of software?
Kees
I got this netbook Acer Aspire One a year ago for use when travelling and it is quite useful. Every time I switch it on it asks me whether I want to back up the system now. It sounds an advisable thing to do.
I understand by this it means not backing up my data, but the putting a copy of the operating system system ON A DISK, so that if damaged I could reconstitute it. Understand like on a CD or DVD type disk.
Only the Acer Aspire One doesn't have a slot for disks.
I do have a couple of hard disks that I use for data back up with data files on them that I can attach to the netbook via usb. But I have been told I cannot put PROGRAMMES or OPERATING SYSTEMS onto hard disks or it is terribly complicated. I want to keep the data on them, don't know if can add this other thing, and don't want to try things that may be impossible.
Can I just do this?

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