What is mean by partition table? How data recovery softwares get information about our deleted items?

Q. What is mean by partition table? How data recovery softwares get information about our deleted items? From where do they find them?

A. Information is written all over the disk. The partition table is a list for displaying the lay out of which parts of the table are reserved for file systems. An example is one partition for Windows and another seperate partition for Linux.

When a file is deleted, the reference to where the data is located is removed, but the data is still written on the disk. A data recovery service/software can examine the whole disk and identify all data on the disk to include that which has no reference in allocation tables.

best software for data recovery on Linux Platform?
Q. What is the best data recovery Software for my Linux Platform. I am specifically using the CentOS 5 for my Zimbra Mail Server. Any suggestions will very much appreciated.

A. You will have to be a lot more specific about what the problem is. Recovery from which linux filesystem or windows filesystem. Has the hard drive crashed, or is it a problem with a deleted file, or a wiped drive?
If you google for data recovery +linux you will see a lot of possible solutions for a lot of possible situations.
Good luck

How to recover MS Windows data after Linux install corrupted windows partition?
Q. I installed OpenSuse Linux 11.1 on my hard drive, and the installer set aside a large chunk of the hard drive for windows. After installing linux and restarting, windows was no longer a boot option (under grub). Also, the partition for windows was no longer readable. I tried to recover the data using data recovery software without any luck. From another windows machine the recovery software says that it cannot read the data.

A. I think what happened was that grub missed adding windows to the boot options. Here is a link to do that. It will not affect anything on the windows partition. Even though the instructions are written for ubuntu they will work for grub in general.
This is assuming that windows and suse are on the same drive, called /dev/hda, windows is hda1 and suse hda2 and above. You will also need your password for suse.
Line 4 first makes a backup copy of the file just in case and the second line will open a window where you can edit the file.
Add the suggested lines to the file, review to check for errors and save the file.
On reboot you should have both options for operating system (I hope)
Good luck




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