simsaladimbamba,
Sorry for being such a pain today. I have lots going on in my life, including getting ready to switch laptop and operating systems.
It probably also doesn't help that I haven't eaten since yesterday, but am trying to be coherent before you leave today.
Not really.
You have the OS and probably your data residing on your internal HDD.
Actually, I am just interested in getting a copy of Mountain Lion to make a bootable DVD/USB,
or - in this case - make a clone of my virgin MacBook Pro so, in essence, I have a bootable external HDD, if you follow me?!
Then you use cloning software like CCC or SD to make a 1:1 copy of the internal HDD to an external HDD (a DVD will not work and a USB flash memory thumb drive might be too small and slow).
Right. (Sorry, that is my starvation kicking in.)
If you do this regularly (once a day, can be setup via scheduling options in both CCC and SD) and your internal HDD crashes, you then restart your Mac and hold down the OPTION key to get to the boot selection screen to select which volume (internal or external HDD (the external HDD needs to be connected for this)) you want to boot from.
Since the internal HDD crashed or got corrupted, selecting the internal HDD on that screen (if it shows up) will probably work, but you will not be able to boot from it.
Therefore you select the external HDD (the one you cloned to your internal HDD regularly) and press ENTER.
After a minute or two, you will have a fully functioning computer only limited by the interface (USB 2.0 is quite slow, but workable) and then can either try to repair the internal HDD (if it just got corrupted) and format it and then clone the external HDD back to the internal HDD (or a new internal HDD if you had to replace the internal HDD).
How does that compare to Time Machine for backup purposes?
(Again, my goal with the cloning is to just make a backup, so I can restore my virgin MacBook Pro if/when I install a new HDD or have a HDD crash. And, specifically, I will need to do this because I will immediately be replacing the installed 5400RMP 750GB HDD with my own Segate 7200RPM 750GB HDD.)
Writing this post has taken me longer than to restart a Mac and selecting the external HDD to boot from and booting from the external HDD and reformatting the internal HDD.
Sorry.
Anyway, was the above understandable?
I think so. (I suppose all of this will make more sense when I have my new laptop in front of me?!)
I have an external USB enclosure for a 2.5" HDD, but I'm not sure of the speed.
Since I just need to clone my new MBP, so I can install a new HDD, does the speed really matter for this one off thing?
And since you use computers, do you backup your valuable data?
I use Time Machine maybe every other week. (Yeah, I know, it should be more often. But it isn't practical for me to dig out my external HDD of my car and do a back every day. I do things more frequently after doing anything important, of course.)
Thanks for all of the help so far!!!
Sincerely,
Debbie