Is SanDisk SSD fast?
Why is my SSD running so slow?
You may be plagued by slow SSD write speed/read speed.
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Whats the difference between solid-state drive and hard drive?
Which one to use for your PC?
Read this post to learn more on SSD VS HDD now.
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However, sometimes you may run into a nettlesome issue SSD gets slow.
Its read & write speed doesnt reach the advertised data transfer speed, which makes you get a headache.
Do you have an SSD from a trusted vendor like SanDisk but still encounter the SanDisk SSD slow issue?
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Why is SanDisk SSD very slow?
External hard drive takes forever to load?
This post shows you how to recover data from a slow external hard drive and fix this issue.

If you use a USB 2.0 or older port to connect your SSD, the speed could slow down.
Just have a check.
Besides, confirm the port is compatible with your SanDisk SSD.

In addition, it’s crucial that you see if the cable is stable.
Only get a cable with enough bandwidth from a well-known manufacturer.
The SSD wont bring too many advantages but leads to slow performance.

sys files occupy much disk space.
See the steps below:
Step 1: Open Command Prompt in Windows 11/10 with admin rights.
How to open Command Prompt (CMD) in Windows 11?

Step 2: After opening the CMD window, punch in inpowercfg.exe/hibernate offand pressEnter.
Then, your SanDisk could work at a fast speed.
If this couldnt do the trick, continue the fixes below.

But if it is disabled in BIOS, your SSD may run slowly and take much time to respond.
Thus, you should change the mode from IDE to AHCI in BIOS.
Step 2: Under theBoottab, chooseSafe bootand clickApply > OK. Then, clickRestart.
Step 3: Constantly press F2 or DEL to start your PC to safe mode.
If you run into the SanDisk SSD slow issue, you could align this solid-state drive.
To do this thing, it’s possible for you to seek help from MiniTool Partition Wizard.
MiniTool Partition Wizard FreeClick to Download100%Clean & Safe
Step 1: Launch MiniTool Partition Wizard.
Step 2: Choose a partition on your SSD and clickAlign Partition.
Alternatively, choose the SanDisk SSD and clickAlign All Partitions.
After erasing, you’re free to continue using this SSD at a fast speed.
Or else, the crucial data could be lost after wiping the SSD.
It can be used in Windows 11/10/8/7 to back up data, a system, disks, and partitions.
Step 3: Choose a USB flash drive or an external hard drive as the destination.
Step 4: ClickBack Up Nowto initiate the data backup.
Erase or Wipe SanDisk SSD
After finishing the data backup, erase the disk data.
If the SanDisk SSD is a data disk, directly wipe this disk.
If it is a system disk, wipe or format its data partitions.
If you find out some other ways, share them with us in the following section.
MiniTool System Booster TrialClick to Download100%Clean & Safe