Files are visible
Do not scan first. Copy the most important folders to another healthy drive. Start with irreplaceable files, not giant folders or software you can reinstall. If copying slows to a crawl, repeats errors, or disconnects, stop.
Budget-conscious data recovery help
DIY Data Recovery: What To Try Before Sending A Drive To A Lab
If the files matter, the safest answer is still to stop using the device and ask a professional first. But many people need free advice before they can pay for a lab. This guide explains what is reasonable to try, what to avoid, and where the line is between a careful DIY attempt and making the drive worse.
- Never recover to the same drive
- Copy priority files first
- Stop if the drive gets worse
Start here
First decide whether DIY is reasonable.
Software recovery can help when the file system, partition, deleted files, or directory structure is the main problem. It cannot fix a physically failing drive, damaged heads, bad firmware, failing flash memory, or an unstable device.
- Reasonable to consider: the drive appears in Disk Management or Disk Utility, shows the correct capacity, stays connected, responds at normal speed, and makes no unusual sounds.
- Not reasonable: the drive clicks, grinds, beeps, disappears, freezes the computer, shows the wrong size, or asks to initialize or format before you can see it.
- Do not try this if the only copy contains business records, legal files, accounting data, family photos, client data, crypto wallet files, or anything you would be upset to lose.
Files were deleted
Stop using the drive. Deleted files can be overwritten by normal computer activity. Install recovery software on another drive, scan the problem drive, and save results somewhere else.
Drive asks to format
Do not format. The file system may be damaged while the old data still exists. A software scan may read around the broken file system, but formatting first reduces your chances.
Drive shows correct size
This is the minimum starting point for DIY. Correct capacity does not guarantee safety, but wrong capacity is a serious warning sign and usually means software recovery is the wrong first move.
SSD or flash media
Deleted data on SSDs, USB sticks, and memory cards may disappear quickly because of TRIM, garbage collection, controller faults, or wear. Stop writing to the device immediately.
RAID, NAS, or server
Do not use this DIY guide for failed arrays. Do not rebuild, initialize, replace multiple drives, or change drive order. Preserve the current state and get advice first.
Stop immediately if
The drive starts clicking, buzzing, grinding, beeping, repeatedly disconnecting, or becoming extremely slow.
Do not initialize
If Windows or macOS asks to initialize, erase, format, repair, or partition the drive, cancel. Those actions can change the evidence on the disk.
A clone is better
If you know how to make a sector-by-sector image safely, recover from the clone instead of the original. If you do not, skip that step rather than experimenting on important data.
No repair tools first
CHKDSK, First Aid, file-system repair, and partition repair tools are meant to repair a volume, not preserve every recoverable file.
No myths
Do not freeze the drive, open it, swap boards casually, tap it, shake it, or keep trying cables after abnormal sounds appear.
Stop while ahead
If you recover the most important files, stop scanning. Do not keep stressing the drive just to see what else might be there.
Prepare first
Set up the safest DIY attempt you can.
- Use a different computer drive to install software. Do not install anything onto the problem drive.
- Have a separate healthy destination drive with more free space than the data you hope to recover.
- Write down what happened, what the drive is doing, and what matters most before you start.
- Turn off automatic repair prompts. Cancel messages asking to initialize, format, scan and fix, repair, erase, or run First Aid.
- If the drive mounts and files are visible, copy the most important files first before attempting a full scan.
- If the first copy or scan behaves badly, stop. Repeating the same stress usually does not make a weak drive healthier.
Device-specific free guides
Choose the device before choosing a technique.
Different devices fail differently. These pages give free best-practice guidance and stop signs for each major device type Aceon services. Tool names are plain text only, with no software links.
Hard drives
For internal, external, laptop, and desktop hard drives that still appear at the hardware level and do not make abnormal sounds.
Open Hard drives DIY guideExternal drives
For external hard drives and portable SSDs where the USB bridge, cable, enclosure, or file system may be part of the problem.
Open External drives DIY guideSSDs and NVMe drives
For SATA, NVMe, external SSD, and solid-state storage cases where deleted files, file-system damage, firmware behavior, or controller issues may be involved.
Open SSDs and NVMe drives DIY guideUSB flash drives
For thumb drives and USB sticks that still appear in the operating system and are not physically broken.
Open USB flash drives DIY guideSD and camera cards
For SD, microSD, CFexpress, and camera cards where photos or videos were deleted, formatted, or became unreadable.
Open SD and camera cards DIY guidePhones and tablets
For phones and tablets where photos, messages, recordings, or files matter and the device may still be accessible.
Open Phones and tablets DIY guideRAID, NAS, and servers
For QNAP, Synology, RAID arrays, servers, and multi-drive storage where the wrong DIY step can destroy the map needed for recovery.
Open RAID, NAS, and servers DIY guideLaptops and desktop computers
For laptops and desktops that will not boot, were deleted from, or have an internal drive that may still be readable.
Open Laptops and desktop computers DIY guideWindows
If the drive appears in Disk Management.
- Connect the drive once and open Disk Management.
- Check whether the physical disk appears and whether the capacity looks correct.
- If Windows says the disk must be initialized before use, cancel. Do not initialize it.
- Do not format, delete, create a new volume, repair the partition, or run CHKDSK.
- If files are visible in File Explorer, copy the most important folders to another healthy drive first.
- If files are missing or the volume will not open, install Recuva on your computer's normal internal drive, not on the problem drive.
- Run Recuva against the problem drive only if the drive is stable, quiet, and showing the correct capacity.
- Save recovered files to a different healthy drive.
- If Recuva cannot find the files, the scan freezes, the drive disconnects, or the drive becomes extremely slow, stop.
Mac
If the drive appears in Disk Utility.
- Connect the drive and open Disk Utility.
- Choose View > Show All Devices so you can see the physical device, not just volumes.
- Check whether the physical drive appears and whether the capacity looks right.
- If macOS says the disk is not readable and offers to initialize it, cancel.
- Do not erase, initialize, partition, mount-force, or run First Aid if the data matters.
- If files are visible in Finder, copy the most important folders to another healthy drive first.
- If files are missing or the volume will not mount, consider Mac recovery software such as Disk Drill, R-Studio, UFS Explorer, DMDE, PhotoRec, or TestDisk.
- Save recovered files to a separate healthy drive, not the problem drive.
- If the drive disconnects, reports I/O errors, becomes very slow, or the software warns about hardware issues, stop.
Common cases
What changes depending on what happened.
- Accidental delete: stop using the drive immediately. The more the computer runs, downloads, updates, or saves files, the more likely deleted data gets overwritten.
- Quick format: do not write anything new. A scan may still find old files if the drive has not been overwritten.
- Full format or overwritten files: chances are much lower. If the data matters, stop and ask.
- External USB drive: one cable or port test is reasonable if the drive is quiet and stable. Repeated plugging, tapping, or power cycling is not.
- Memory card from a camera: stop taking photos or videos on the card. Recover to a computer drive, not back to the card.
- Encrypted drive: keep the password or recovery key safe. Do not share it in chat or upload it anywhere.
When DIY does not work
Contact us before the next attempt.
If software does not find the files, do not stack more tools on top of the same weak drive. The next scan may add more wear without improving the result.
- Tell us the device type and model if known.
- Tell us whether it appears in Disk Management or Disk Utility.
- Tell us what software was tried and whether anything was recovered.
- Tell us the most important folders or file types.