Q: Hi. I have created a disk image from major HD to a external hard drive. Question is: HD has used 282gb from 320gb, backup disk ima ... more
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Jan 29, 2016 3:13 AMby KimUserName,Probably not.
You will need a external hard drive as big or bigger than the drive you are trying to back up.
You have not said what backup software you are using.
I use Carbon Copy Cloner by Bombich https://bombich.com/ $40.00. You could also use Super Duper.
Both of these products will make a complete bootable backup or clone of you existing hard drive, including your recovery partition.
Once you have made the backup, if your hard drive was ever to fail, you could simply boot to the external backup drive.
If you are backing up because you are in the process of upgrading hard drive to a SSD, you could put the SSD in an external case and clone your existing drive to SSD, test it and then replace the HD when you are confident it is working ok.
P.S. External hard drives are very inexpensive nowadays. Here is an example: http://www.bestbuy.com/site/wd-my-passport-ultra-1tb-external-usb-3-0-2-0-portab le-hard-drive-classic-black/7869174.p?id…
Kim
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Jan 29, 2016 4:23 AMby CRLV,External hard drive I used to create a disk image is, WD - My passport with 1TB, completely empty. I'm not using any software, just disk utility. Can that difference result of compression option I choose for create the disk image? I'm trying that option due to my mac been unable to boot by itself. "Repair disk" or "repair permissions" are useless. Option available is "backup all the data you can, clean disk, reformat and and install original SO, which is snow leopard. Can that option, through disk image, reliable when you don't want to lose any files from your mac HD?
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Jan 29, 2016 5:02 AMby KimUserName,What model / year of macbook pro are you using?
What operation system and version number are you using?
Have you booted into Safe mode or Recovery mode?
Are you using Time Machine to backup your data?
Do you have a current backup?
When you said you made a disk image, did you get any messages when it was complete, indicating you were successful?
Here is some info that might help: OS X: About OS X Recovery - Apple Support
Try safe mode if your Mac doesn't finish starting up - Apple Support
Using Disk Utility to verify or repair disks - Apple Support
How to reinstall OS X on your Mac - Apple Support
Kim
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Jan 29, 2016 5:50 AMby CRLV,MacBook Pro 13inch, year 2010. Actually I was using Mavericks version 10.9.
I have tried to boot on safe mode, it start's to fill that bar bellow and then suddenly turn black and switch off.
Now I used "C" key when boot.
I never configured Time Machine on Mac which is a mistake, I know now.
I don't have any previous backup.
All went ok on the disk image process creation, tests went all right as well.
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Jan 29, 2016 7:14 AMby KimUserName,HelpfulI have never used the Disk image creation on Mac, so I can't comment on it.
Have you tried to boot into Diagnostics. Startup key combinations for Mac - Apple Support
- Press the power button to turn on your computer.
- Immediately press and hold the D key until Apple Diagnostics begins.
Kim
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Jan 29, 2016 7:00 AMby KimUserName,I also found this link: https://www.youtube.com/watch?v=PZ2ZvwGQG_M
Also another thought. If your hard drive has a lot of important data you may be able to read it by putting it into an external case and connecting it up to another mac using USB. Just a thought.
Kim
