This post if about the power of big tech companies like Microsoft (I have had similar experiences with Google), and also about the human touch being replaced by AI. About artificial intelligence make decisions, and the failure to provide effective channels to correct mistakes made by AI. I normally never beg for up-votes, shares or… Read More: AV False positives are a plague, specially those by AI »
For over 20 years I have been developing, been involved in development of and supporting data and file recovery software. Some very specific incidents sparked my interest in data recovery and then I wanted to find out how data was stored and lost on and from hard drives. The first tools I wrote were DOS tools… Read More: My r/datarecovery subreddit FAQ »
Who does not want it, professional grade data recovery software on a budget when you have an immediate need for it? Forget Stellar, forget the Disk Drill and RecoverIt! Although I have been and still am an enthusiastic advocate for ReclaiMe File Recovery, I try to keep an open mind and test other tools regularly.… Read More: Professional grade data recovery software on a budget »
A common error message that JPEG-Repair reports is ‘no SOS detected’. I have written several posts and made videos to repair JPEG photos in case the Windows photo viewers report errors: The old Windows photo viewer: File appears to be damaged, corrupted or is too large. The new Windows Photos: It looks like we don’t… Read More: JPEG-Repair, no SOS detected »
To add new features in JPEG-Repair or JpegDigger it is not like me sitting and wondering ‘what will I add now’? It is much a demand driven process. Real cases present themselves and if they can’t be solved by my own tools or 3rd party tools I consider if it’s worth the effort of adding… Read More: New features in JPEG-Repair and JpegDigger and what sparked them »
Fragmentation on FAT file systems and file recovery Most memory cards in camera’s are formatted with a flavor of the FAT file system (FAT32, exFAT). A property of FAT file system is that after deletion or formatting the card, non contiguous or fragmented files can not be recovered in one piece. This is due to… Read More: Recover a fragmented, non-contiguous, incomplete JPEG »
There are various examples on this website of repairs of half grey or truncated JPEG images. In those cases all image data is actually present, but due to an error or corruption only a part of it is visible. If data is simply missing because for example the file is partially overwritten or cut-off, repair… Read More: Alternative method for half grey or truncated JPEG photo repair »
This article shows repair of JPEGs that fell victim of ransomware. This particular ransomware only encrypts part of the file. Due to this the JPEG header and some 150 KB of JPEG data are lost. Using a reference file and weeding encrypted data we can repair the photo.
If you get a Unknown or invalid JPEG Marker this means one of two: The photo viewer or editor encountered a JPEG marker it isn’t familiar with. The JPEG file is corrupt. To rule out cause 1, your photo viewer editor doesn’t recognize a certain JPEG marker, update your software and if that does not help, try… Read More: Unknown or invalid JPEG Marker »
Often I am asked to repair JPEGs that can be opened but don’t display correctly. Many of those look okay for some part, but turn into a grey area at some point. Repairing these files (or recovering them as we’ll see) isn’t always straight forward and sometimes requires some detective work. Half grey photos In… Read More: The corrupt JPEGs that weren’t corrupt »