Portable HDD Raw Copy Tool 2.5
HDD Raw Copy Tool Portable is a lightweight, powerful, and completely free utility designed for low-level, sector-by-sector disk imaging, cloning, and verification, making it an essential tool for IT professionals, data recovery specialists, forensic analysts, system administrators, and hardware enthusiasts who need to create exact bit-for-bit duplicates of hard drives, SSDs, USB drives, memory cards, or any other storage media without relying on operating system filesystems or partition structures.
Available as both a portable executable and Windows installer for Windows 10 and 11, this freeware application bypasses high-level abstractions to perform raw duplication—capturing every sector from Master Boot Record (MBR) and GUID Partition Table (GPT) through all partitions (including hidden, recovery, and diagnostic ones), boot records, filesystem metadata, unallocated space, and even the gaps between partitions—producing forensic-grade disk images in classic .img format or the modern resumable .imgcv2 format with embedded logging and optional cryptographic hashing for chain-of-custody verification.
Whether backing up a failing drive before total collapse, creating identical clones for RAID rebuilds or server migrations, preparing forensic evidence images that withstand legal scrutiny, or simply duplicating an OS installation across hardware upgrades, HDD Raw Copy Tool Portable delivers unmatched reliability, speed, and precision through its simple three-step workflow: select source, choose target (disk or image file), and execute with full progress monitoring and error statistics.
Raw Copy Fundamentals
At its core, HDD Raw Copy Tool Portable operates at the physical disk level using direct sector I/O, ignoring Windows’ logical volume management entirely to ensure completeness and accuracy unattainable by file-copy utilities like Robocopy or imaging tools dependent on filesystem drivers (NTFS, FAT32, exFAT, ext4, APFS, HFS+, UFS). This sector-by-sector approach guarantees an exact replica: if the source contains 500GB of data across three primary partitions, 200GB unallocated, plus 16MB of inter-partition slack and a 512-byte MBR, the target receives precisely that byte-for-byte, including bad sector skips (marked and logged without halting) and HPA/DCO-protected service areas if accessible via the hardware interface.
The tool supports an extensive range of media and interfaces: SATA (I/II/III/M.2 NVMe via standard AHCI), IDE/PATA legacy drives, SAS enterprise arrays, SCSI, USB 2.0/3.0/3.1 external enclosures, FireWire (IEEE 1394), SD/microSD cards via readers, CompactFlash, Memory Stick, MMC, and even optical media emulation through raw access. Physical drives appear as \.\PhysicalDriveN (0-255), logical volumes as partitions, allowing granular selection—image just the Windows C: partition or the entire 4TB RAID volume. No partition resizing, alignment optimization, or intelligent sector remapping; pure fidelity rules, making it the gold standard for scenarios where even a single flipped bit invalidates the duplicate.
Dual Imaging Formats: Classic .img and Advanced .imgcv2
HDD Raw Copy Tool Portable offers two output formats tailored to different needs. The traditional raw .img (DD-style) creates a single monolithic file containing every sector sequentially, mountable via tools like ImDisk, OSFMount, or 7-Zip for inspection, restorable directly back to disk, or analyzable with hex editors like WinHex/HxD. This format remains compact for healthy drives but balloons with bad sectors (skipped with 0xFF padding and logged).
The newer .imgcv2 format elevates imaging to professional standards: resumable acquisition survives power failures or crashes by checkpointing progress every 1GB (configurable), embedding comprehensive XML logs (timestamps, throughput stats, error counts, sector ranges), job metadata (operator notes, case ID, chain-of-custody tags), and optional rolling hashes (MD5, SHA-1, SHA-256, SHA-512) computed on-the-fly for tamper-evident verification. During restoration, .imgcv2 self-validates integrity before writing, appending post-job hashes for court admissibility. Split volumes (e.g., 4GB chunks for DVD archiving) maintain referential integrity, with rebuild tools reassembling transparently.
Three Primary Workflows: Imaging, Cloning, Verification
Disk Imaging: Select source (e.g., failing 1TB SATA HDD), target file (C:\backup.img or network share), optional compression (none/ZLIB for minor gains on sparse data), and hash selection. Tool displays drive geometry (LBA48/CHS, sectors/track), capacity, and estimated time (e.g., 250MB/s → 1hr for 1TB). Progress bar tracks bytes copied, speed curve graphs throughput peaks/valleys, error counter flags unreadable sectors (retries 3x with 100ms delays), and verification pass (read-only re-scan) confirms 100% match post-completion.
Direct Cloning: Source to target disk (must match/exceed capacity)—ideal for SSD upgrades or RAID hot-swap. Warning prompts confirm data destruction on target; no partition table resizing needed as geometry copies verbatim. Perfect for migrating Windows/Linux installs across hardware, preserving hibernation files, pagefiles, and OEM recovery partitions intact.
Read-Only Validation: Post-clone/image, re-select source/target pair for non-destructive sector comparison. Bytewise diffing flags mismatches (none expected on healthy media), sector-addressed logging pinpoints failures (e.g., “Sector 0x1A2B3C4D read mismatch”), with optional full hashing for digital signatures.
Performance Optimization and Hardware Handling
Multi-threaded I/O leverages all CPU cores for read-ahead buffering (1-64MB adjustable), asynchronous writes, and overlapped operations—modern NVMe SSDs hit 3-5GB/s sustained, SATA III peaks 550MB/s, USB 3.2 Gen2x2 reaches 2GB/s. Bad sector handling skips intelligently (log offset/size), retries with escalating timeouts (50ms-5s), or forces raw dump (0x00/0xFF fill). HPA/DCO bypass via vendor commands accesses full capacity beyond reported LBA count.
RAID and dynamic volumes supported transparently—software RAID0/1/5 via Windows volumes, hardware RAID through controller passthrough. NVMe namespaces, ZFS pools, and LVM logical volumes image as unified blocks. Bootable USB creation embeds tool for pre-OS rescue (WinPE compatible).
User Interface Simplicity Meets Pro Features
BWGEN’s distilled interface launches to dual-pane selector: left lists sources (PhysicalDrive0: 500GB Seagate ST500DM002 [Online]), right targets (files via browser or drives). Continue→Continue→START workflow minimizes clicks; Abort halts cleanly with partial-image salvage. Real-time stats dominate: Elapsed/Predicted time, Copy Speed (min/max/avg graphs), Progress % (sector bar + bytes), Buffer Fill (prevents stalls), Errors (count/type), Hash Progress (for .imgcv2). Pause/Resume toggles instantly, speed limiter (10-100%) prevents target overload.
Pro panels unfold: Log viewer (filterable events), Drive Info (S.M.A.R.T. status, temperature, firmware), Compare mode preview, and Settings (threads, buffer, hash algo, verify threshold). Portable edition zero-config, installer adds shell extensions (right-click “Raw Copy”).
Forensic and Enterprise Workflows
Digital forensics shines: .imgcv2 chain-of-custody logs timestamp acquisitions with operator ID, CRC32 per 64MB block, rolling SHA-256 for immutability. ACPO compliance via write-blocker detection (read-only source enforcement). Batch scripting via command-line (RawCopy.exe /source \\.\PhysicalDrive1 /target backup.imgcv2 /hash SHA256 /verify) automates evidence processing. Enterprise imaging farms parallelize via multiple instances.
Data recovery from failing drives prioritizes: incremental images resume from last checkpoint, sector remapping logs guide low-level repairs. Test lab workflows restore golden images to VM disks or bare metal.
Error Handling and Robustness
Comprehensive diagnostics catch issues early: insufficient privileges prompt admin elevation, target too small aborts gracefully, read timeouts log retries, write-protected USBs warn upfront. Partial images salvage via truncation detection, verification skips known bad ranges. S.M.A.R.T. monitoring aborts on pending/imminent failures.
Comparison to Alternatives
Versus Clonezilla/dd: superior Windows GUI, faster NTFS volumes, .imgcv2 innovation. Macrium Reflect: raw over intelligent sector copy. FTK Imager: hashing/logging edge, no installer bloat. All outperform in simplicity/speed balance.
Advanced Techniques
Split Imaging: .imgcv2 auto-splits >4GB for FAT32. Network Targets: SMB/NFS shares. VM Integration: VHD/VMDK restore. Boot Repair: Clone system partition to USB for WinRE. Encryption Bypass: Raw copies BitLocker volumes undecrypted (password post-restore).
Use Cases Spanning Scenarios
Consumer: Clone OS to larger SSD pre-upgrade.
IT Admin: Image golden employee laptops.
Forensics: Evidence-grade server seizures.
Recovery: Failing RAID member extraction.
Archivist: Legacy IDE drive preservation.
Performance Benchmarks
1TB SATA SSD: 5min image (3.3GB/s peak). 4TB HDD clone: 2.5hrs (250MB/s). Bad sectors: graceful 10% slowdown.
System Requirements and Portability
Win10/11 x64, 2GB RAM min. Portable ZIP USB-bootable via Rufus. No .NET/Java deps.
What v2 adds
- Modern Windows 10/11 release with a simpler workflow
- Resumable
.imgcv2images with embedded log, metadata, job tag, and notes - Optional hashing: MD5, SHA-1, SHA-256, SHA-512
- Pause / resume and stop-for-resume-later for supported workflows
- Read Only mode for source validation without writing an output image
- Legacy v1 downloads remain available below for users who prefer the older release
Good to know
- For physical-drive work, run the tool as Administrator
- For the safest physical-drive imaging, exclusive source access is preferred
- File-only workflows, metadata viewing, and automation can be used without elevation
Examples of possible uses
- Data recovery: make a copy of a damaged drive and work from the copy
- Data recovery: image a damaged hard drive while skipping bad sectors
- Migration: completely migrate from one drive to another
- Backup: create an exact image of a disk or USB flash drive for later restoration
- Corporate imaging: store device images and restore them later
- Digital forensics: acquire raw sector images with detailed logs and optional hashes
- Software QA and lab workflows: restore prepared test systems from saved images
- Duplicate, clone, or save a full image of almost any supported media