Copy Your Linux Install to a Different Partition or Drive
If you need to move your Linux installation to a different hard drive or partition (and keep it working) and your distro uses grub this tech tip is what you need.
To start, get a live CD and boot into it. I prefer Ubuntu for things like this. It has Gparted. Now follow the steps outlined below.
- Mount both your source and destination partitions.
Run this command from a terminal:
$ sudo cp -afv /path/to/source/* /path/to/destinationDon’t forget the asterisk after the source path.
- After the command finishes copying, shut down, remove the source drive, and boot the live CD again.
- Mount your destination drive (or partition).
- Run the command “gksu gedit” (or use nano or vi).
Edit the file /etc/fstab. Change the UUID or device entry with
the mount point / (the root partition) to your new drive.
You can find your new drive’s (or partition’s) UUID with this
$ ls -l /dev/disk/by-uuid/
- Edit the file /boot/grub/menu.lst. Change the UUID of the appropriate entries at the bottom of the file to the new one.
- Run sudo grub.
At the Grub prompt, type:
find /boot/grub/menu.lstThis will tell you what your new drive and partition’s number is. (Something like hd(0,0))
root hd(0,0)but replace "hd(0,0)" with your partition’s number from above.
setup hd(0)but replace "hd(0)" with your drive's number from above. (Omit the comma and the number after it).
That’s it! You should now have a bootable working copy of your source drive on your destination drive! You can use this to move to a different drive, partition, or filesystem.
Practical Task Scheduling Deployment
July 20, 2016 12:00 pm CDT
One of the best things about the UNIX environment (aside from being stable and efficient) is the vast array of software tools available to help you do your job. Traditionally, a UNIX tool does only one thing, but does that one thing very well. For example, grep is very easy to use and can search vast amounts of data quickly. The find tool can find a particular file or files based on all kinds of criteria. It's pretty easy to string these tools together to build even more powerful tools, such as a tool that finds all of the .log files in the /home directory and searches each one for a particular entry. This erector-set mentality allows UNIX system administrators to seem to always have the right tool for the job.
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