Category Archives: Disk Structures and File Systems

Disk Structures File Systems are vital for an operating system to locate your data on a hard disk. A chain of pointers, starting at the first sector of your drive eventually points to individual files.

On disk structures

Unstable SD card with bad sectors data recovery – freezing, locks up, read errors, disconnects

Recovering your precious photos from a SD card can be challenging enough after accidental file deletion or formatting. Recovering data from an unstable SD Card may prove to even more difficult. Recovering data from an unstable SD Card Many file, photo and data recovery tools available focus on file recovery. Their efforts focus on discovery… Read More »

RAW data recovery

RAW can mean several things with regards to data recovery; ‘You can recover your RAW photos from a SD Card with a RAW file system using RAW file recovery’. With regards to file and photo recovery, RAW data recovery can refer to three different things: The recovery method; RAW vs. file system based recovery It… Read More »

You must initialize the disk before Logical Disk Manager can access it

When Windows Disk Manager does not find partitions it will display the message “You must initialize the disk before Logical Disk Manager can access it”. In other words the hard disk, SSD or removable device is “unallocated” or not partitioned. What does this mean and how do you recover your data if you need to?… Read More »

Is ReclaiMe still the recommended all-round data recovery tool?

The best all-round data recovery tool for end users. No. It’s a resource hungry and expensive tool compared to other options we have. It also requires a constant internet connection. DiskTuna no longer endorses Reclaime instead consider these options: Recommended data recovery programs (DiskTuna Approved):     UFS Explorer www.ufsexplorer.com. Very well rounded tool supporting… Read More »

Partial full format on SD Card, can I recover photos?

You can not recover if you let a full format complete. It depends if the full format was allowed to complete. A full format overwrites data. Overwritten data can not be recovered. So in case the format operation had the chance to complete, you can stop reading here, nothing and no one will be able… Read More »

Disk Drill Review | A real review (2 & 4)

Please note that this about older versions of Disk Drill and may not all reflect the current version! An updated review will follow soon. Update January 2025: I had another look ..  In all fairness, little of criticism I had back then survives the 2025 version. Disk Drill in 2025 is a more matured product.… Read More »

JPEG photo recovery from sd card using Piriform Recuva

Recently I was offered a batch of corrupt JPEGs for repair that were recovered from a SD card using Piriform’s Recuva. The recovered files were not recognized by any image viewer as valid JPG files. This does not appear to be an uncommon thing. Recuva is a popular and the go-to file recovery tool for… Read More »

Tips on selecting the best file recovery software

In this post I’ll give you some tips on evaluating file recovery software. To tell good from bad data recovery software. If you have just lost data and are now searching for a solution you will find that are hundreds of tools available that all claim to be the best in getting your data back.… Read More »

Photos on SD card are corrupt

When you discover photos on your SD card are corrupt or the memory card itself is corrupt you should: Do as little as possible (read: nothing) with the card. Do NOT run chkdsk on the card itself! Do not format the card even if it asks you to! Instead: Create a disk image of the… Read More »