Tools for secure data erasure on Linux systems
Tools for secure data erasure on Linux systems
I have many solid drives ready for destruction. The dban tool is too sluggish and prone to errors. I attempted the killdisk utility, but it caused significant issues. Ubuntu's disk manager with secure erase performs well—2TB partitions erase in hours, not days. On a few drives, one works perfectly after secure erase, while another reports formatting errors despite passing checks. I can partition and write files to both drives on my Windows PC. Anyone have advice on fixing Ubuntu's disk utility problems or recommend other tools? @manikyath @Captain_WD
use sudo dd to write from empty data to the specified drive (sdb, sdc, etc.). If you prefer, replace zeros with random bytes. Alternatively, run sudo dd if=/dev/urandom to generate random data before writing.
These are the standard Linux secure erase tools. They’re straightforward to operate. Simply navigate to your command line and type “man scrub” and “man shred.” If available, they’ll display the documentation for each utility. Remember, securely erasing a disk writes repeatedly across the entire storage, which naturally makes the process time-consuming.
I've been working with dban, which handles several passes over the SATA drive instead of relying on secure erase to let the HDD's controller manage itself.
Many sources claim shred and scrub are faster than dban. They both rewrite files using sequential or random data, support multiple passes, and can clear entire disks or partitions. For total destruction, simply use a heavy tool like a sledgehammer.
Then tearing up or cleaning would suffice. That’s what I did. Honestly, if these are personal drives, it shows you don’t deserve someone to search through your porn. (And don’t forget, recovering data after overwriting with these tools can be costly—sometimes unrecoverable.) If they’re corporate drives, just meet the basic requirements and move on.
Interesting fact, many believe you must go through several passes to completely wipe data. In reality, just one pass is sufficient to render everything on the disk unrecoverable, regardless of your technical expertise or whether you're dealing with a regular user or law enforcement.