How to Delete Files on SSD? 3 Easy Steps10 Mar 2020 | Jetico Technical Support
How to delete files on SSD? You hit the delete button and the file is gone, right?
Unfortunately, with most storage methods, that isn't the case. And while SSDs are supposed to delete your files immediately using a command called 'TRIM', it’s often unreliable.
The good news is this means you have a chance of recovering the file you just accidentally deleted, just with considerably more difficulty than with a traditional hard drive. The bad news, however, others can recover your deleted files too. With some data this might not matter, but with sensitive files you may want to make sure it's really gone. Many organizations are often legally required to delete personal data, such as the 'Right to Be Forgotten' in GDPR or the 'Right to Erasure' in LGPD. And what if you're using a removable drive to transfer files to a third party? Or taking your laptop overseas?
In this blog we’ll explain the issues with wiping selected files on SSD, as well as provide you with 3 easy steps to overcome this challenge.
What Is the Biggest Challenge for Wiping Selected Files on SSD?
The biggest issue is that SSDs don't store files the way HDDs do. Hard disk drives know exactly where each file is located. The file occupies a number of sectors on the drive; and a wiping tool can locate those sectors and overwrite them.
It's not so simple with SSD - memory cells have a limited capacity of read/write operations. Wear-levelling manages this limitation by distributing writes evenly across the drive. The SSD controller can then decide where to put the updated contents. Unfortunately, this means you can't know for sure where your new data goes, making it impossible to locate and overwrite a specific file.
One approach is to just erase the entire drive. Disk erasure tools get rid of all pieces of data by overwriting every sector. Unfortunately, this cleans everything off the disk, including user files and operating system data. In some cases, this might be practical, like with a removable drive where you frequently replace all the data. Yet on modern computers with SSD or hybrid drives, regularly erasing everything is clearly more of a problem. Nobody wants to be restoring from backups after every time a file or folder is deleted. So most people think just to rely on TRIM to ensure their files are gone. Unfortunately, while TRIM is a better deletion command than on most HDDs, it still only 'forgets' about the file rather than securely erasing it. The file contents are erased only when the SSD eventually writes to that cell.
But there’s hope! Instead regularly erasing the entire drive just to get rid of a single file, wipe free space is a functional alternative. Wiping free space securely overwrites all available cells of the SSD, which includes files marked for deletion. Your active files are left alone.
Sounds like magic? Let's show you how it's done with BCWipe.
There are 3 simple steps for deleting files on SSD forever:
- 'Delete with wiping' on selected files or folders
- 'Wipe Free Space' using 3-pass DoE scheme to ensure secure deletion
- Optionally, use 'Reserved Space Manager' to work faster
Once you have successfully installed BCWipe, then 'Run as administrator'…
- Go to Start menu
- Select 'BCWipe'
- Right-click 'BCWipe Task Manager'
- Select ‘More’ and choose 'Run as administrator'
- If prompted for elevation, click 'Yes'
Step 1: 'Delete with wiping'
- Click the 'Add Task' icon
- Enable 'Delete with wiping' under the Wiping commands tab
Then follow these steps to delete the file:
- Under 'Delete with wiping' click 'Add file'
- Browse and select the data
- Click 'Open'
- Click 'Save and start' to start the process
NOTE: BCWipe will erase these files beyond recovery. Always double check you have picked the right files!
Before clicking 'Save and Start', check the other tabs. You can use 'Schedule' to set a specific start time for the task, or task frequency. 'Wipe options' switches between wiping schemes and allows enabling a logging function to record what was deleted.
Next, to complete the wiping process to make sure that the file is really gone.
- Enable 'Wipe Free space' option
- Select the drive subject files resided on.
- (Optional) Select the 'Schedule' tab to confirm when the task will run
- Select the 'Wipe options' tab and choose from the dropdown menu 'U.S. DoD 5220.22-M(E)' to ensure secure deletion
- Click 'Save and Start' to start the task now or 'Save' if you have selected to schedule it for later.
This will run the Wipe Free Space command to ensure secure deletion. Wiping free space overwrites everything on the drive that does not contain an active file, including cells that were completely empty.
Step 3: 'Reserved Space Manager' (Recommended)
Wiping free space takes a while to run and should be scheduled to occur during downtime. If you use this command regularly, then we recommend using Reserved Space Manager. This feature blocks a portion of cleaned free space, removing the need to wipe this part every time. From now on the amount of space to overwrite is smaller, completing the 'Wipe Free space' task in less time.
- Go back to 'Wipe Free space'
- Select a drive from the 'Local drive list'
- Click 'Manage reserved space'
- Set the "Enable reserved space" checkbox.
- The slider will jump to the recommended value. Drag to adjust if needed.
- Click 'Set'
If your drive starts to fill up, the software will automatically reduce the size of reserved space, making more free space available to be used for files. You can also manually adjust the amount of reserved space at any time. For example, after deleting a large amount of data you could increase the size of reserved space to run Wipe Free Space even faster.
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The Ultimate Guide to Securely Wiping Computer
How to Securely Wipe Your Windows 10 Computer Clean
How to Securely & Completely Wipe Your MacBook Clean
Degaussing Doesn't Work on SSD - Use Data Wiping Instead
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