Recovery method of data loss after chkdsk

Today, I will talk to you about the recovery methods of data loss after chkdsk, which may not be well understood by many people. In order to make you understand better, the editor has summarized the following contents for you. I hope you can gain something according to this article.

(1) Fault type: data loss after chkdsk

(2) typical characteristics:

1. When moving files between hard disk partitions or copying a large amount of data, the files are lost after a sudden power outage, crash or automatic restart.

Generate a large number of CHK files

two。 Loss of data after manual command to chkdsk disk

3. Due to the bad track and instability of the hard disk, a large number of CHK files are generated after the system CHKDSK.

(3) Star evaluation of damage degree: ★★★

[solution]

(I) recovery process

1. Detection process:

(1) check if there are any folders similar to FOUND.000 in the disk partition. "if there are a large number of texts that drop out to chk in the folder,"

Piece

(2) analyze the directory structure of the file system.

two。 Implementation process:

(1) low-level analysis and detection of the file system directory area; (2) tracking the file information that dropped out to chk "locate the file tag"

(3) reorganize and restore the file directory area

(4) re-check and load the catalogue area

3. Acceptance process:

(1) attribute statistics for all migrated data "from the number of files"

And capacity to ensure that all the data required by users has been migrated successfully.

(2) verify the integrity of all migrated data to ensure that

The file is correct in the directory structure and underlying logic; (3) targeted verification of the key data files specified by the user "to ensure the successful recovery of the user key data."

(2) Reliability analysis and time estimation of recovery:

After chkdsk, some file directories will be rewritten "causing the directory to be unable to associate with the data area", resulting in a small amount of data loss.

But files can usually be recovered in the data area through file type characteristics. Most file directories can still be relatively complete.

The recovery time ranges from 1 to 3 working days.

[tips]

(1) when copying a large amount of data, it is necessary to ensure that the computer and storage have a normal power supply "to reduce the crash or automatic restart due to a sudden power outage".

Bring about this kind of failure.

(2) in the event of such a failure, we should try our best to avoid copying data to the fault zone "so as not to overwrite the lost data."

(3) the professional data recovery personnel should be consulted in time to deal with it.

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