Frustration and Loss: The Sandisk Extreme Pro Portable SSD Not Working

Jaden updated on May 22, 2024 | Home >Computer Instruction

Data storage and protection have become vital components of our daily lives in today's digital age. Sandisk Extreme Pro Portable SSDs are popular among people looking for a dependable and convenient method of data storage.

However, recent reports of SanDisk Extreme Pro portable SSD not working have sparked concerns about data loss. For example, a SanDisk SSD user asked for help in Microsoft Community:

Bought a SanDisk Extreme Pro Portable SSD and connected it to my Surface Pro Advance LTE. Everything works fine at first. However, when leaving the machine idle for a few minutes (repeatable and consistent), the following message pops up when accessing the drive:

1. Device is not ready

2. Semaphore timeout period has expired

Tried on a few other Surface Pro Advance LTE. Same issue. Tried on a MacBook, and everything works without issue. I tried the following and noting can fix this issue:

1. Fresh Start

2. Install the latest firmware and drivers

3. Uncheck "Allow the computer to turn off this device to save power" in all USB controllers in the device manager.

The Sandisk Extreme Pro Portable SSDs have been reported to malfunction, leading to potential data loss. Various factors, including physical damage, compatibility issues, and firmware errors, can cause this issue.

This post will look into the problem and offer advice on avoiding data loss and restoring lost data.

Explanation: Sandisk Extreme Pro Portable SSD Malfunctions

There could be a number of reasons why your SanDisk Extreme Portable SSD not detected or SanDisk Extreme Pro portable SSD is not working, or the SanDisk Extreme Pro Portable SSD is failing. Some of the most common reasons are as follows:

  • ⚔️SATA compatibility: The SanDisk Extreme Pro SSD has a SATA interface, and the adapter, dock, or case used with the drive may not be compatible with the SATA version of the drive.
  • 📄File system errors: Errors in the file system of the SSD can cause the device to malfunction, resulting in data loss or the inability to access files.
  • 🦠Virus or malware infection: A virus or malware infection can cause the SSD to malfunction, corrupt files, or cause the device to become unresponsive.
  • 🔋A power surge or voltage fluctuation: A sudden power surge or voltage fluctuation can damage the internal components of the SSD, leading to malfunctions.

Solutions: Fix Sandisk Extreme Pro Portable SSD Not Working

What will happen if your SanDisk Extreme Pro portable SSD suddenly stops working? The first answer is the risk of data loss. Data loss can have significant consequences, both personally and professionally. Thus, before fixing your SSD device, we strongly advise you to use SSD data recovery software to restore your data beforehand. EaseUS Data Recovery Wizard can recover lost data from any disaster, even RAW disks.

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Follow the steps to recover deleted files from the SanDisk Extreme Pro portable SSD that is not working:

Step 1. Install and launch the EaseUS Data Recovery Wizard, choose the SanDisk Extreme Pro portable SSD from which you lost your data, and then click Scan.

Step 2. After reviewing the Deleted Files and Other Missing Files folders, use the Filter and Search options to locate lost SanDisk Extreme Pro portable SSD data.

Step 3. To recover deleted SanDisk Extreme Pro portable SSD data, choose the relevant data and press the "Recover" button.

Fix 1. Update firmware and software

Regularly updating the firmware and software of your SSD can help avoid potential issues caused by outdated or corrupt firmware. Visit the video page website to download your device's latest firmware and software updates.

Fix 2. Run a disk check

To fix file system errors on your SSD, you can use the built-in disk check utility on Windows or macOS.

For Windows users,

Step 1. Open File Explorer to find the failed SSD, select "Properties,"

Step 2. Click on the "Tools" tab and click "Check."

Finally, follow the on-screen instructions to repair any errors that impact your SanDisk SSD.

For macOS users,

Step 1. Open Disk Utility from Finder.

Step 2. Choose the problematic SSD, and click "First Aid."

Fix 3. Format the SSD

If the issue persists and you have backed up your data, you can try formatting the SSD to resolve any file system errors or other issues. Formatting will erase all data on the device, so ensure you have a backup before proceeding.

Step 1. Connect your SanDisk Extreme Pro portable SSD to your computer.

Step 2. Open File Explorer, locate and right-click on the SSD, and then select "Format".

Step 3. Set the new file system to SSD, then click "Start".

Step 4. To complete the formatting, use the "OK" button.

Mac Format SSD

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Fix 4. Get Data Recovery Service

If the issue persists, seeking professional help from data recovery services is often the best solution for recovering lost information.

Consult with EaseUS data recovery experts for one-on-one manual recovery service. We could offer the following services after FREE diagnosis

  • Repair corrupted RAID structure, unbootable Windows OS, and corrupted virtual disk file
  • Recover/repair lost partition and re-partitioned drive
  • Unformat hard drive and repair raw drive(Bitlocker encrypted drive)
  • Fix disks that become GPT-protected partitions

Prevention: Protect Sandisk Extreme Pro SSD from Data Loss

Prevention is always better than cure. Several measures can be taken to prevent data loss.

  • Firstly, backing up data regularly on multiple devices or cloud storage is crucial.
  • Investing in quality storage devices and ensuring proper care and maintenance can also reduce the chances of data loss.
  • Finally, keeping firmware and software up to date is essential to avoid any compatibility issues.

And don't forget to keep your computer's operating system and software up-to-date, which can help prevent issues with your SSD's compatibility and performance.


While the Sandisk Extreme Pro Portable SSD is known for its speed and reliability, it can still experience malfunctions for various reasons. Following the solutions and preventive measures outlined in this article to keep your SSD functioning optimally and protect your data from potential loss.

Regularly backing up your data, updating firmware and software, and taking care of your device can help ensure your Sandisk Extreme Pro Portable SSD remains a reliable and high-performing storage solution for your creative needs.

If one of the methods is helpful to resolve your problem, share it on Facebook, Twitter, Instagram, and other social media platforms!


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Updated by Dany

Dany is an editor of EaseUS who lives and works in Chengdu, China. She focuses on writing articles about data recovery on Mac devices and PCs. She is devoted to improving her writing skills and enriching her professional knowledge. Dany also enjoys reading detective novels in her spare time.

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Written by Jaden

Jaden is one of the editors of EaseUS, who focuses on topics concerning PCs and Mac data recovery. Jaden is committed to enhancing professional IT knowledge and writing abilities. She is always keen on new and intelligent products.

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