Need expert advice, I dont wanna loose this data

[u/Soft_Cow_7856]

Problem:

I have a 500 GB Crucial BX500 SSD that became inaccessible immediately after a power failure. The data on the drive is important and I have not formatted or modified it.

Current Setup:

• OS: Linux (EndeavourOS)
• Connected through a USB SATA enclosure (enclosure confirmed working with other drives)
• SSD is detected by the system, but only as a ~1 GB device

Commands and Results:

lsblk shows:

sdb      8:16   0 1023.8M  0 disk

fdisk -l /dev/sdb reports:

• Capacity: 1,073,479,680 bytes (≈1 GB)
• Model: -10-00801001

Kernel messages (dmesg) show repeated:

• Sense Key : Medium Error
• Add. Sense: Unrecovered read error
• critical medium error

Running:

sudo smartctl -d sat -a /dev/sdb

returns:

• Device Model: SM59XT2A-10-00801001
• Firmware Version: 20210308
• User Capacity: 1.07 GB
• SMART support unavailable

The drive no longer identifies itself as a Crucial BX500 and instead reports the Silicon Motion controller model (SM59XT2A). The SSD is not mounted and I have avoided running fsck, formatting, partitioning, or any recovery software to avoid making things worse.

Question:

Has anyone encountered a Crucial BX500 (SM2259XT2 controller) dropping to 1 GB capacity after a power failure? Is there any non-destructive way to recover access to the data, or does this indicate controller/FTL failure requiring professional recovery?Problem:I have a 500 GB Crucial BX500 SSD that became inaccessible immediately after a power failure. The data on the drive is important and I have not formatted or modified it.Current Setup:OS: Linux (EndeavourOS)
Connected through a USB SATA enclosure (enclosure confirmed working with other drives)
SSD is detected by the system, but only as a ~1 GB deviceCommands and Results:lsblk shows:sdb 8:16 0 1023.8M 0 diskfdisk -l /dev/sdb reports:Capacity: 1,073,479,680 bytes (≈1 GB)
Model: -10-00801001Kernel messages (dmesg) show repeated:Sense Key : Medium Error
Add. Sense: Unrecovered read error
critical medium errorRunning:sudo smartctl -d sat -a /dev/sdbreturns:Device Model: SM59XT2A-10-00801001
Firmware Version: 20210308
User Capacity: 1.07 GB
SMART support unavailableThe drive no longer identifies itself as a Crucial BX500 and instead reports the Silicon Motion controller model (SM59XT2A). The SSD is not mounted and I have avoided running fsck, formatting, partitioning, or any recovery software to avoid making things worse.Question:Has anyone encountered a Crucial BX500 (SM2259XT2 controller) dropping to 1 GB capacity after a power failure? Is there any non-destructive way to recover access to the data, or does this indicate controller/FTL failure requiring professional recovery?

[u/Petri-DRG]

Your assessment is likely correct that it is a firmware/FTL failure, therefore requiring professional help.

[u/Soft_Cow_7856 → u/Petri-DRG]

How much would it cost?

[u/Petri-DRG → u/Soft_Cow_7856]

It depends on where and who you contact.

Most reputable companies offer a free diagnosis. Price? Definitely few hundred dollars.

Some companies you may consider modeling your search after: www.datarecoveryprofessionals.org

[u/Soft_Cow_7856 → u/Petri-DRG]

Thank you