Working from a disk image lets recovery software examine a copy of readable storage instead of repeatedly scanning the original device. It can also preserve a stable source for comparing recovery attempts. The quality and completeness of the image still matter: copying unreadable or already overwritten storage cannot recreate the original missing bytes.
Raw .img and .dd sources are common examples in an image-based workflow. With Recovery Studio, verify the image container, filesystem, host operating system and required operations in the support matrix. Acquisition from a physical device and analysis of a pre-existing image require separate compatibility checks.
Decide whether software scanning is the next step
If a drive is consistently readable and you already have a suitable image, image analysis may be a practical next step. If a drive clicks, repeatedly disappears or develops read errors, first consider the value of the data and an appropriate acquisition assessment. Repeated scans of an unstable original can consume the remaining opportunity to read it.
The GNU ddrescue manual recommends avoiding filesystem repair on a drive with I/O errors and working with copies. Its instructions also explain why source and destination identification are critical. This is a preservation principle, not a claim that Recovery Studio implements ddrescue or replaces professional hardware tools. GNU ddrescue manual
An image and a normal file copy preserve different things
A normal folder copy generally transfers files currently exposed by a filesystem. A raw image represents bytes from a selected device or region, which may include deleted-file remnants and filesystem structures that normal copying does not expose.
Confirm which region was acquired. An image of one partition and an image of an entire disk may contain different information. Keep any acquisition report, source notes and unreadable-range map together with the image. A filename ending in .img does not establish that it is an uncompressed raw image or that its filesystem is supported.
Use a stable working source
Preserve the original acquired image, then use a working copy for analysis when storage permits. A checksum can help detect whether a file changes between steps. It cannot prove that the acquisition included every original sector or that all source data was correct.
An error map provides a different kind of information: where acquisition could not read the source. A missing region filled with placeholder bytes must not be treated as verified content. If an exported document or video overlaps that region, its apparent size may overstate how much useful original material survives.
Recover to a separate physical destination
Keep recovered files away from the affected source device. Do not rely on a new folder or another partition on the same source disk. Also allow space for both the image and the files you export, rather than estimating destination capacity from the expected size of a single important folder.
Use the scan's available filters to review candidate files, inspect supported previews and retain any partial or unverified status. Export a representative subset before judging the entire result. Distinguish image-acquisition resumption from scan resumption: the ability to continue copying a source does not automatically mean a tool can reopen every interrupted scan at its last checkpoint.
Know when an image cannot solve the loss
An image taken after data has been overwritten contains the replacement bytes. SSD behavior such as TRIM can also make old data unavailable. An image of encrypted content does not remove the need for the appropriate keys and a supported decoding workflow.
The NTFS guide explains metadata-based extraction, while the file-checking guide covers document validation. Review supported sources and compatible downloads before choosing a workflow on Windows or Mac. Keep the image, error map and first recovered copies together so later analysis can be traced back to the same source.