moverstama.blogg.se - Scan external hard drive

It uses CHKDSK for this purpose and you are given several options for how far you want it to go when it finds corruption. If the system sees that the drive was not properly ejected the previous time, it suggests scanning it to check for any corrupted files. So you can have some other current file and your partially saved file both pointing to the same file snippet, looking as if the snippet is part of both files, or get the end of some deleted file looking like it's the end of your partially written file. However, if the saved portion is written to a previously used part of the drive, it could end up confused with other files or in the middle of flotsam from old files (deleted files remain on the drive their file identity is deleted and the old contents are left to be overwritten). Incomplete files can simply be missing a portion. If you disconnect the drive without ejecting and waiting for a message that it is safe to remove it, it may contain incomplete files. Also, simply removing the drive could interrupt in-progress writing. When you "eject" the drive, it forces any cached information to be written, ensuring everything is complete. Sometimes, information that is supposed to be saved to the drive is temporarily stored and then written later. The message you describe sounds like the drive was not disconnected "gracefully".

I would also like to know what would happen if I cancel the scan? I did cancel it, but now I have some problems with accessing the files on the hard drive. This is actually very annoying that the operating system decided to remove some my folders and did it without my conformation. I need to know what is happening there since after I made the scan with the first option being selected, I got a notification that some folders were inaccessible and have been removed. So, my questions is: What does this scan do exactly? What does it check? What does the removal of the found errors mean? How can the lost data can be restored (where are they located). It was possible to have the both options selected.

Scan and remove the found errors automatically (it was selected by default).

It was also written that the detected errors can be caused by an earlier non-safe disconnection of the hard drive.īefore the scan I could also select the following options:

I have connected my external USB hard drive to my Windows computer, I got a notification that some error is detected and it is recommended to perform a scan of the hard drive.