Partition Find and Mount Explained: Tips for Data Recovery and Mounting Recovered PartitionsWhen a hard drive, SSD, or removable media becomes unreadable or a partition disappears, losing access to data can be stressful. Partition Find and Mount (PFM) is a specialized utility designed to scan storage devices, locate lost or damaged partitions, and mount them in a way that lets you recover files without immediately writing changes to disk. This article explains how PFM works, when to use it, step‑by‑step procedures, best practices for safe recovery, troubleshooting tips, and alternatives.
What is Partition Find and Mount?
Partition Find and Mount is a recovery tool that scans disks for partition structures and file systems, attempts to reconstruct partition tables, and provides a way to mount discovered partitions read‑only for safe data retrieval. The key idea is non‑destructive recovery: you inspect and extract files before making permanent repairs to the disk.
Common uses:
- Recovering partitions after accidental deletion or formatting
- Accessing partitions after partition table corruption
- Extracting files from drives showing up as unallocated or RAW in the OS
- Forensic analysis where preserving original data is critical
How Partition Recovery Works (high level)
Partition recovery generally involves these steps:
- Disk scanning: The tool reads raw disk sectors and searches for signatures of known partition tables (MBR/GPT), boot sectors, and file system structures (NTFS, FAT, exFAT, ext variants).
- Partition reconstruction: Based on found signatures and metadata, the tool proposes partitions with start and end sectors and identifies file system type and likely mount point.
- Validation: Tools often validate proposed partitions by checking internal file system metadata (like NTFS MFT entries or superblocks in ext).
- Read‑only mounting: To prevent accidental writes, recovered partitions are usually mounted read‑only so you can copy files out.
- Optional repair or writing: After extracting data, you can choose to repair partition tables or rewrite structures if confident.
When to Use PFM vs. Other Tools
Use Partition Find and Mount when:
- The partition table is missing or corrupted but the underlying file system structures likely remain.
- You need a non‑destructive method to access files (read‑only mount).
- You prefer a GUI or semi‑automated approach that proposes partitions to review.
Consider other tools if:
- You need deep file carving (recovering files without file system metadata) — use tools like PhotoRec or scalpel.
- You need full disk imaging or forensic preservation — first create a sector‑level image with ddrescue.
- The disk has physical damage — consult professionals or use imaging first.
Preparation: Safety First
Before attempting any recovery:
- Stop using the affected drive to avoid overwriting recoverable data.
- If possible, connect the drive as a secondary device (not the system/boot drive).
- Create a full sector image of the drive if the disk shows signs of hardware failure or errors. Recommended tool: ddrescue.
- Work on a copy (image) whenever possible; perform risky repairs only on the image.
Example ddrescue command:
ddrescue -f -n /dev/sdX /path/to/image.img /path/to/logfile.log
This creates an image and a log file so ddrescue can resume or retry problematic areas later.
Step‑by‑Step: Using Partition Find and Mount (typical workflow)
Note: interface and exact steps depend on the specific PFM implementation/version. This is a general workflow.
- Install and launch the tool.
- Select the target disk or disk image to scan.
- Run a full scan for partitions — choose “deep scan” if available.
- Review detected partitions: examine start/end sectors, file system type, size, and confidence level.
- For each promising partition, choose to mount it read‑only (most tools offer a mount preview).
- Open the mounted partition in your file manager or copy important files to another healthy drive.
- If files are missing but partition looks valid, consider running file system repair tools on a copy or attempt file recovery tools on the mounted content.
- After retrieving all needed data, if you want to restore the drive to normal, you can rebuild partition tables or reformat and restore files from backups.
Practical Tips for Efficient Recovery
- Always copy recovered files to a different physical disk.
- Prioritize recovering unique or irreplaceable data first (photos, documents).
- Use checksums (md5/sha256) when copying large numbers of files to ensure integrity.
- If the tool shows multiple conflicting partition layouts, save screenshots or notes of each layout before making changes.
- If mount fails due to minor file system inconsistencies, mounting read‑only with corrective mount options (if supported) might allow copying without repair.
Common Problems and Troubleshooting
- Tool detects partition but mounting fails:
- Try mounting as read‑only.
- Check for file system-specific repair options (e.g., testdisk or ntfsfix) but run them on an image, not the original.
- Files appear corrupted:
- Corruption may be due to partially overwritten metadata; try file carving tools.
- Verify file headers to identify recoverable content.
- Disk has bad sectors:
- Image the disk with ddrescue and work from the image; allow multiple passes for ddrescue to recover readable sectors.
- Multiple operating systems / mixed partition tables (MBR vs GPT):
- Carefully note which schema your system used; tools may propose both MBR and GPT interpretations.
Example Tools to Complement PFM
- ddrescue — sector‑level imaging of failing media.
- TestDisk — powerful open‑source partition table and boot sector recovery; pairs well with PhotoRec.
- PhotoRec / scalpel — file carving for when file system metadata is missing.
- ntfsundelete / ntfsfix — NTFS-specific recovery and repair helpers.
- Linux mount with loop devices — mount disk images or recovered partitions for further analysis.
Comparison (quick):
Task | Best tool(s) |
---|---|
Create disk image from failing drive | ddrescue |
Recover partition table / mount recovered partition | Partition Find and Mount, TestDisk |
Recover files without metadata | PhotoRec, scalpel |
NTFS-specific fixes | ntfsfix, ntfsundelete |
After Recovery: Rebuild and Prevent Future Loss
- Repartition and format the drive only after you’ve secured all data.
- Restore data from your backups onto a freshly prepared volume.
- Run full SMART diagnostics to assess drive health — consider replacing drives with failing SMART attributes.
- Set up a regular backup routine (3‑2‑1 rule: 3 copies, 2 different media, 1 offsite).
- Consider using RAID or cloud backup for critical data.
When to Seek Professional Help
- Physical damage: clicking noises, intermittent detection, excessive bad sectors.
- Extremely valuable data where DIY risks aren’t acceptable.
- Forensic requirements where chain of custody and strict preservation are required.
Partition Find and Mount is a powerful approach for recovering access to lost partitions while minimizing risk to original data. The safest recovery path is: stop using the device, image the drive if possible, mount recovered partitions read‑only, copy essential files to another drive, then repair or replace the damaged disk.