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In this section, we'll illustrate how to recover lost files by using FinalRecovery's "Raw Recovery" function.
As you know, the crux of a file recovery matter is the remained file system data which relative to the lost file. For example, a remained FDT record is required for FinalRecovery to find out lost file in FAT file system, and a remained file record is required for FinalRecovery to find out lost file in NTFS file system. So, a file can't be recovered if its FDT record (or File Record) has been damaged, even though the content of the file is intact. As you can see, some new methods are required to recover those files.
Fortunately, many file types have their unique file formats. For example, most Microsoft Office files start with hex number 0xD0, 0xCF, 0x11, 0xE0. So it is rational to consider that an office file has been found when FinalRecovery found 0xD0, 0xCF, 0x11, 0xE0 at the begining of a sector. By analyzing other information, FinalRecovery can identify the exact file type, and the size of the file also can be got by alalyzing the file.
In the same way, .jpg photos start with hex number 0xFF, 0xD8, and the last word of .jpg files is 0xFF, 0xD9. So we can know the start position and the file size of a .jpg photo.
The following is some useful file types and their file headers:
|doc, ppt, xls||'0xD0, 0xCF, 0x11, 0xE0'|
|docx, pptx, xlsx, zip||'PK'|
|gif||'GIF87' or 'GIF89'|
|'%PDF-XXXX%', 'XXXX' is pdf version.|
|tif, cr2, dng, orf, nef, dcr, pef, raw, arw, sr2||'II' or 'MM'|
Obviously, by using "Raw Recovery", FinalRecovery can recover files even their FDT records or File records have already been damaged. It sounds good, but "Raw Recovery" also has its disadvantages:
Raw Recovery is suitable to recover lost digital image files. Users can try this method if lost data can't be recovered in standard or advanced recovery mode. Finalrecovery can recover many type of image file format in this mode, which are listed below.
|Bitmap (.bmp)||Mamiya Raw Graphics File (.mef)|
|GIF Graphics File (.gif)||Nikon Raw Graphics Files (.nef)|
|Corel Draw File (.cdr)||Olympus Raw Graphics File (.orf)|
|Bently Microstation Drawing (.dng)||Panasonic Raw Graphics File (.raw)|
|Png Graphics File (.png)||Pentax Raw Graphics File (.pef .dng)|
|Tiff Graphics File (.tif)||Samsung Raw Graphics File (.dng)|
|Canon Raw Graphics File (.tif .crw .crw)||Sony Raw Graphics File (.arw .sr2 .dng)|
|Kodak Raw Graphics File (.dcr)||Sigma Raw Graphics File (.x3f)|
|Leica Raw Graphics File (.raw)||Konica-Minolta Raw Graphics File (.mrw)|
|Fuji Raw Graphics File (.raf)||Adobe Photoshop Image File (.psd .8bps)|
Raw Recovery is suitable to recover lost Microsoft Office documents. Users can try this method if lost data can't be recovered in standard or advanced recovery mode. Finalrecovery can recover most type of Office documents in this mode, which are listed below.
|Word 97-2003 Document (.doc .dot .asd)|
|Excel 97-2003 Worksheet (.xls .xla .xlt)|
|PowerPoint 97-2003 Presentation (.ppt)|
|Word 2007 Document (.docx .docm .dotx .dotm)|
|Excel 2007 Worksheet (.xlsx .xlsm .xltx .xltm .xlsb)|
|PowerPoint 2007 Presentation (.pptx .pptm .potx .potm)|
1. Select the drive which to be recovered;
2. Show "Select Scan Mode" dialog by clicking "Scan" button, then click "Advanced Scan";
3. When "Advanced Scan" completed, "Raw Recovery" button will be enabled;
4. Show "Raw Recovery" window by clicking "Raw Recovery" button;
5. Now you can select the files which you wanted and click "Recover" button to save them.
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