2017年10月15日星期日

lost data recovery

It’s happened to us all: deleting a file, folder or entire disk, then realizing that you’ve made a mistake.  You reach for your backup – and you don’t have a backup.  What now?

There are several utilities available to help recover deleted files under Mac OS X.  Your chances of success depend on lost data recovery how the file was deleted and what you’ve done since then.  Unfortunately you will also lose your original filenames, though some reconstruction is possible.

On the Macintosh moving a file to the trash, then Emptying the Trash, deletes the item.  When you delete a file or folder you remove the entry for that item from the disk directory. Immediately after deletion the data still remains on the disk where it was but the directory says “that space is vacant.” As long as you don’t write anything new to the disk, recovery is usually straightforward.

If you accidentally delete something you need, if at all possible stop using the affected disk immediately.

Partitioning a disk removes all existing volumes on a device, then creates new ones with new disk directories. However nikon software free like a Quick Erase, Partitioning doesn’t actually remove underlying data, it just marks the space as available.  File recovery is usually possible on re-partitioned drives, though this will require a more thorough scan than with a standard erase.

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