Recovery Software vs. Hardware Recovery

Stellar Data Recovery Alternative for Hardware Failure

Written by

Founder & Chief Technician

Updated March 2026

12 min read

Stellar Data Recovery is a legitimate tool for logical failures: accidental deletion, formatted volumes, corrupted partitions on physically healthy drives. If the drive is detected by your operating system with its correct model number and capacity, Stellar is a reasonable starting point. But if the drive is clicking, not spinning, showing up as "SATAFIRM S11" with 0 bytes, or Stellar is frozen mid-scan with no progress, the problem is hardware. No software can bypass broken read/write heads, a locked SSD controller, or Apple Silicon hardware encryption. That is a limitation of every application that communicates through the operating system's standard storage interface.

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When Stellar Is the Right Tool

Stellar Data Recovery scans file system metadata, partition tables, and unallocated disk space for recognizable file signatures. It can rebuild corrupted directory entries, locate lost partitions, and carve files from raw sectors. This works when:

The drive spins up normally and is detected in BIOS/UEFI with its correct model number and capacity
The drive appears in Disk Management (Windows) or Disk Utility (macOS), even if the volume is not mountable
You accidentally deleted files, formatted the wrong partition, or the file system corrupted after an improper shutdown or power loss
The drive does not make unusual sounds (clicking, beeping, grinding) when powered on

In these scenarios, Stellar, R-Studio, DMDE, PhotoRec, and similar tools are appropriate. Professional recovery would be unnecessary overhead. Stellar's Standard edition ($59.99/year) or Professional edition ($89.99/year) covers the same logical recovery scenarios. The free version caps actual data recovery at 1 GB. If you want a free method that handles the same work without a license fee, our ddrescue guide covers sector-level cloning with open-source tools.

Where Stellar Data Recovery Stops Working

When Stellar hangs, recovers only corrupted files, or cannot see the drive at all, the problem is below the software layer. Stellar communicates through the OS standard ATA/NVMe driver. If the hardware between the NAND flash and the operating system is broken, no scan settings or license tier will change the outcome.

Failing Read/Write Heads (HDD)

A hard drive reads data by flying a magnetic head nanometers above a spinning platter. When a head is degraded, it can still read some sectors but fails on others. The drive's firmware retries each failed read multiple times before reporting an error to the OS. During those retries, the drive is unresponsive. Stellar freezes because it is waiting on a hardware response that takes seconds instead of milliseconds. If the heads are severely damaged, the drive clicks repeatedly as it tries to recalibrate heads that can no longer position correctly.

Firmware Corruption

Hard drives store their operating firmware partly on the platters in a reserved area called the Service Area (SA). If SA modules become corrupted or unreadable, the drive may not initialize properly: it might spin up, get detected with a wrong capacity or model name, or fail to enumerate at all. Stellar cannot interact with a drive that has not finished its initialization sequence because the drive itself does not know how to present its data to the host system.

SMR Complications

Modern consumer HDDs use Shingled Magnetic Recording (SMR), where data tracks overlap like shingles on a roof. When Stellar gets stuck reading bad sectors on an SMR drive, the drive's background garbage collection process may continue running, rewriting adjacent tracks to consolidate data. This background process can overwrite recoverable data while the software is hung waiting for a read response. The longer a failing SMR drive stays powered on, the more data the controller may silently destroy through internal maintenance operations.

Drive Dropping Off the Bus

When a drive encounters persistent read errors, its firmware may reset the SATA or USB interface. Stellar's scan stops because the device just disappeared from the system. USB enclosures are prone to this because many consumer USB-SATA bridge chips have short timeout thresholds and drop the connection when the drive does not respond in time.

If Stellar is frozen or scanning at near-zero speed, stop the scan and power down the drive. Leaving a physically failing drive running for hours while software retries reads can score the platter surface and permanently destroy data that was otherwise recoverable.

Why Stellar Recovers 0-Byte Files from SSDs

Users report that Stellar finds deleted files on their SSD, but the recovered files are 0 bytes, unplayable, or corrupted. This is not a bug in Stellar. It is TRIM doing what it was designed to do.

TRIM is an ATA command the operating system sends to the SSD when a file is deleted. It notifies the controller that specific NAND flash blocks are no longer needed. The controller then erases those blocks during its internal garbage collection cycle. On a mechanical hard drive, deleting a file marks the space as available in the file system but leaves the magnetic data intact until something overwrites it. On an SSD with TRIM active, the controller erases the underlying NAND cells during garbage collection. The data is gone electrically, not just logically.

What Stellar recovers in this scenario is the file system pointer: the Master File Table (MFT) entry that says a file existed at specific clusters. The pointer survives because the MFT is stored separately from the data. But when Stellar follows that pointer to read the actual file content, the NAND blocks have been erased by the controller. The result is a file with the correct name and file size but no actual data inside.

TRIM is enabled by default on every modern SSD running Windows 7 and later, macOS 10.10.4 and later, and most current Linux distributions with kernel 3.8 and above. If you deleted files on an SSD and more than a few seconds passed before you noticed, TRIM has likely already run on those blocks.

SSD Data Recovery Can You Recover Data After TRIM?

SSD Controller Failures: When the Drive Is Invisible to Software

Some SSD failures do not erase data. They make the controller stop communicating. The NAND flash chips still hold the data intact, but the controller is the only path between the NAND and the operating system. When the controller locks up, Stellar and every other OS-level tool see nothing.

Phison S11: SATAFIRM S11 Mode

When a Phison PS3111-S11-based SSD encounters firmware corruption, the controller enters a lockup mode. The host system identifies the drive as "SATAFIRM S11" with a reported capacity of 0 bytes. The drive is present on the SATA bus but returning invalid identification data. Stellar will either not see the drive at all or see a 0-byte device with no scannable sectors. PC-3000 SSD communicates directly with the controller through vendor-specific commands to push it out of the lockup state and access the NAND contents.

Silicon Motion SM2259XT: Stalled I/O

SM2259XT-based SSDs can enter a state where the drive enumerates on the SATA bus with correct capacity and appears in Device Manager, but all read operations stall. The OS reports 100% disk activity indefinitely. The controller accepts commands but does not process them, so no data transfers complete. Stellar's scan will hang at 0% or 1% with no progress because every read request the software sends is accepted by the controller but never fulfilled. The NAND data is intact; the controller is the failure point.

NVMe Monolithic BGA Packages

Modern NVMe SSDs are monolithic BGA (Ball Grid Array) packages where the controller, DRAM cache, and NAND flash are soldered together on a single substrate. If the controller dies due to a power surge or firmware failure, the entire package stops enumerating on the PCIe bus. The operating system sees no device. There is no cable to swap, no enclosure to try. Recovery requires board-level diagnosis: checking power rails with an oscilloscope, replacing failed voltage regulators via microsoldering, or in some cases extracting NAND chips and reading them directly with specialized equipment.

Apple T2 and M-Series Macs: Why Software Cannot Help

Mac users looking for Stellar alternatives face an additional constraint. On Macs with T2 security chips (2018-2020 Intel Macs) and all Apple Silicon Macs (M1/M2/M3/M4), the SSD storage is encrypted at the hardware level by the Secure Enclave. The encryption keys are bound to the specific security chip on that specific logic board.

If the logic board dies, the NAND chips cannot be read by any external tool because the decryption keys died with the board. Stellar, Disk Drill, and every other software tool are not just ineffective here; they cannot even begin a scan because the data is AES-encrypted at the hardware level. The NAND blocks contain ciphertext that is meaningless without the Secure Enclave key.

The only path to data is repairing the original logic board at the component level to restore Secure Enclave functionality. This means diagnosing which power rail or component failed, sourcing donor parts, and resoldering ball grid array chips under a microscope. Chip-off NAND extraction is not viable for these devices.

Mac Data Recovery Apple T2 Chip Recovery M-Series Soldered NAND Recovery

Stellar Software vs. Professional Lab Recovery

Scenario	Stellar Data Recovery (Software)	Professional Lab Recovery
Accidental deletion (no TRIM)	Recovers files by scanning file system metadata and carving raw sectors	Can do the same work, but software is faster and cheaper for this case
SSD after TRIM	Finds file pointers only. Recovered files are 0 bytes or corrupted because NAND blocks were erased by the controller	TRIM-erased data is unrecoverable by any method. Lab recovery addresses controller lockups where NAND data is intact but inaccessible
Clicking or beeping HDD	Cannot help. Scanning forces damaged heads across platters, risking permanent surface damage	Head swap in a 0.02µm ULPA-filtered clean bench, then PC-3000 imaging with head maps and adaptive read parameters
SATAFIRM S11 / controller lockup	Drive shows 0 bytes or wrong name. Software sees nothing scannable	PC-3000 sends vendor-specific commands to push the controller out of lockup and access NAND contents directly
Apple T2/M-series Mac	Cannot decrypt. NAND is hardware-encrypted by the Secure Enclave. Software cannot access the decryption key	Board-level repair restores Secure Enclave functionality so the Mac can decrypt its own storage
NVMe monolithic BGA failure	Drive not detected on PCIe bus. No device for software to scan	Board-level diagnosis, voltage regulator replacement, or NAND extraction with specialized BGA rework equipment
Pricing	Free (1 GB cap), $59.99/yr Standard, $89.99/yr Professional, $99.99/yr Premium	HDD: $100-$2,000. SSD: $200-$1,500. Free evaluation. No data, no fee

How Hardware-Level Recovery Works

The PC-3000 is a PCIe hardware card paired with proprietary software that sends vendor-specific ATA commands to the drive's firmware. These are commands that a standard motherboard SATA controller cannot issue and that Stellar has no mechanism to send. This gives a technician direct access to:

Firmware modules stored in the drive's Service Area, including translator tables that map logical block addresses (LBAs) to physical platter locations
Head maps and defect lists that control which heads are active and which sectors are excluded from normal operation
Read parameters including head positioning offsets, retry behavior, and timeout thresholds. A technician can disable the drive's internal retry logic and control read attempts directly, preventing the drive from endlessly retrying bad sectors (which is what causes Stellar to freeze)
Selective imaging where the tool reads accessible areas first, skips damaged regions, and returns to them in later passes with adjusted parameters. Stellar does a sequential scan from sector 0 to the end; PC-3000 prioritizes the areas most likely to contain the target data

How to Tell If Your Problem Is Hardware

Before deciding between software and professional recovery, check these indicators:

Check Task Manager or Activity Monitor. If Stellar shows 0% CPU and 0% disk usage while the scan progress bar is stuck, the drive's controller has locked up the I/O bus. The software is waiting for a response the hardware cannot provide.
Listen to the physical drive. Clicking, beeping, or rhythmic sweeping sounds indicate a mechanical head failure. Software cannot bypass physical geometry damage.
Check Disk Management or Disk Utility. If the drive shows as "Not Initialized," reports 0 bytes, displays the wrong model name, or drops out entirely during a Stellar scan, the firmware or controller hardware has failed.
Monitor scan duration vs. progress. A healthy 2TB drive should complete a deep scan in 4-8 hours depending on interface speed. If Stellar has been running for 24+ hours with less than 5% progress, the drive is struggling to read sectors and powering it down preserves more data than forcing the scan to continue.

Likely Logical (Software Can Help)

Drive detected with correct model and capacity
No unusual sounds from the drive
Files were accidentally deleted or partition was formatted
Stellar scan completes and finds files

Likely Physical (Software Will Not Help)

Drive clicking, beeping, or grinding
Not detected in BIOS or shows 0 GB / wrong name
Stellar frozen with no progress for hours
Drive disappears mid-scan or after power cycling

Hard Drive Recovery Pricing

We quote based on the fault, not the perceived value of your data. Evaluation is free. No data recovered means no charge.

Service Tier	Price	Description
Simple CopyLow complexity	$100	Your drive works, you just need the data moved off it Functional drive; data transfer to new media Rush available: +$100
File System RecoveryLow complexity	From $250	Your drive isn't recognized by your computer, but it's not making unusual sounds File system corruption. Accessible with professional recovery software but not by the OS Starting price; final depends on complexity
Firmware RepairMedium complexity – PC-3000 required	$600–$900	Your drive is completely inaccessible. It may be detected but shows the wrong size or won't respond Firmware corruption: ROM, modules, or translator tables corrupted; requires PC-3000 terminal access Standard drives at lower end; high-density drives at higher end
Head SwapHigh complexity – clean bench surgery50% deposit	$1,200–$1,500	Your drive is clicking, beeping, or won't spin. The internal read/write heads have failed Head stack assembly failure. Transplanting heads from a matching donor drive on a clean bench 50% deposit required. Donor parts are consumed in the repair
Surface / Platter DamageHigh complexity – clean bench surgery50% deposit	$2,000	Your drive was dropped, has visible damage, or a head crash scraped the platters Platter scoring or contamination. Requires platter cleaning and head swap 50% deposit required. Donor parts are consumed in the repair. Most difficult recovery type.

Hardware Repair vs. Software Locks

Our "no data, no fee" policy applies to hardware recovery. We do not bill for unsuccessful physical repairs. If we replace a hard drive read/write head assembly or repair a liquid-damaged logic board to a bootable state, the hardware repair is complete and standard rates apply. If data remains inaccessible due to user-configured software locks, a forgotten passcode, or a remote wipe command, the physical repair is still billable. We cannot bypass user encryption or activation locks.

All tiers: Free evaluation and firm quote before any paid work. No data, no fee on simple copy, file system, and firmware tiers. Head swap and surface damage require a 50% deposit because donor parts are consumed in the attempt.

Target drive: The destination drive we copy recovered data onto. You can supply your own or we provide one at cost. For ultra-high-capacity drives (20TB and above), the target drive costs approximately $400+ due to the large media required. All prices are plus applicable tax.

SSD Recovery Pricing

SSD recovery pricing is based on the type of failure and the level of intervention required, from file system repair through controller-level recovery.

Service Tier	Price	Description
Simple CopyLow complexity	$200	Your drive works, you just need the data moved off it Functional drive; data transfer to new media Rush available: +$100
File System RecoveryLow complexity	From $250	Your drive isn't showing up, but it's not physically damaged File system corruption. Visible to recovery software but not to OS Starting price; final depends on complexity
Circuit Board RepairMedium complexity – PC-3000 required	$600–$900	Your drive won't power on or has shorted components PCB issues: failed voltage regulators, dead PMICs, shorted capacitors May require a donor drive (additional cost)
Firmware RecoveryMedium complexity – PC-3000 required	$900–$1,200	Your drive is detected but shows the wrong name, wrong size, or no data Firmware corruption: ROM, modules, or system files corrupted Price depends on extent of bad areas in NAND
Advanced Board RebuildHigh complexity – precision microsoldering and BGA rework	$1,200–$1,500	Your drive's circuit board is severely damaged and requires advanced micro-soldering Advanced component repair. Micro-soldering to revive native logic board or utilize specialized vendor protocols 50% deposit required upfront; donor drive cost additional

Hardware Repair vs. Software Locks

All tiers: Free evaluation and firm quote before any paid work. No data, no fee on all tiers (advanced board rebuild requires a 50% deposit because donor parts are consumed in the attempt).

Target drive: The destination drive we copy recovered data onto. You can supply your own or we provide one at cost. All prices are plus applicable tax.

Frequently Asked Questions

Why does Stellar Data Recovery show my files but recover them as corrupted?

On SSDs, this is caused by the TRIM command. When you delete a file, the operating system sends a TRIM notification telling the SSD controller those NAND flash blocks are no longer needed. The controller then erases them during its internal garbage collection cycle. The file system metadata (the directory entry showing the file name and size) may still exist, which is why Stellar finds the file during a scan. But when the software tries to read the actual file data, it pulls from blocks the controller has already erased. The result is a file with the correct name but no usable content inside. On HDDs, corrupted recoveries usually indicate the sectors holding the file data were overwritten or the read/write heads were too degraded to read them cleanly.

Is Stellar Data Recovery legitimate?

Stellar is a real company that has operated for over two decades. Their software handles logical data loss scenarios on healthy drives: accidental deletion, formatted partitions, corrupted file systems. User frustration typically comes from cases where the free version scans a drive and displays file names, prompting a license purchase, but the recovered files turn out corrupted because the underlying failure was hardware-based, not logical. Stellar software did what it was designed to do; the problem is that the drive needed hardware-level intervention, not a software scan.

What should I do if Stellar Data Recovery is stuck or frozen during a scan?

Power off the drive. A scan that hangs for hours or estimates hundreds of hours to complete is reading from a drive with failing hardware. On HDDs, this means degraded read/write heads are causing the drive firmware to enter internal retry loops on bad sectors. On SSDs, it can indicate a controller that is accepting commands but not processing them. Forcing a failing drive to keep running while software retries reads accelerates the damage. The data may still be recoverable with hardware-level tools, but only if the drive is powered down before the heads score the platter surface or the controller locks out entirely.

Can Stellar Data Recovery fix the SATAFIRM S11 error?

No. When an SSD shows up as "SATAFIRM S11" with 0 bytes capacity, the Phison PS3111-S11 controller has entered a firmware lockup state. The drive is present on the SATA bus but returning invalid identification data. Stellar and all other consumer software rely on the operating system's standard storage interface to communicate with the drive, and that interface requires the controller to be functioning normally. PC-3000 SSD sends vendor-specific commands directly to the controller, pushing it out of the lockup state and accessing the NAND contents through the controller's diagnostic interface.

How does Stellar pricing compare to professional lab recovery?

Stellar's Standard edition costs $59.99/year and the Professional edition costs $89.99/year. The free version caps recovery at 1 GB. Professional recovery at our lab starts at $100 for HDD and $200 for SSD, with free evaluation and no charge if we cannot recover data. These address different categories of failure. Stellar handles logical failures on healthy drives. Professional recovery handles physical failures, firmware corruption, and controller lockups where the drive hardware itself has failed. If Stellar can solve your problem, it costs less. If the drive has a hardware fault, no software license will change that.

What Customers Say

4.9 across 1,837+ verified Google reviews

May 10, 2020

“I consulted Rossmann Repair Group for data recovery services. A new IT client was recently referred to me, because his main computer crashed and his business database went offline as a result. It turned out that the computer crashed because its main storage, a 500 GB Solid State Hybrid Drive, failed. That part was easy - replace it with a new 1 TB SSD and reinstall Windows along with the software he uses. However, the data on the SSHD was critical and would have meant serious problems for his business if he didn't get that back. That's where Rossmann Repair Group came in.”

Shomari Hohn

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July 24, 2024

“Went in to ask if they could retrieve my SSD from my Surface Pro 4 for me and they gave me a good rate, but was still a bit too expensive for me. So, they let me use their equipment for about an hour until I was able to fish it out myself and recover my data.”

Aravind Udayakumar

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November 17, 2021

“Sent in a SSD for data recovery for a client of mine. Data was recovered! What else can I say. Thank you.”

David Dachenhaus (DDock)

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February 2, 2026

“Amazing place! Super friendly and knowledgeable people! I have a LaCie Rugged Pro SSD that stopped mounting. It turns out the enclosure was the problem, not the SSD itself. They helped diagnose the issue and offered solutions—all free of charge. Great experience, and I highly recommend them! 😊”

Ludwig JonssonLaCie

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