for Mac (macOS / OS X)

How to erase hard drive? Windows7 logo   How to erase hard drive? Intel logo

Active@ KillDisk for Mac is an easy-to use & compact freeware utility that allows to sanitize attached media storage with the 24 international data sanitizing standards. It permanently erases all data on Hard Disks, Solid State Drives, Memory Cards & USB drives, SCSI storage & RAID disk arrays.

You can sanitize any external HDD/SSD or USB Flash Drive connected to your Mac, however system disk (where macOS resides) cannot be erased.

Freeware version installation package (dmg) includes executable, being able to run on iMac, MacBook & Mac Pro family and erase all attached disks except the system disk with One Pass Zeros data sanitizing standard.

Professional version package (zip) contains KillDisk installation (dmg). Installation include executable, being able to run on iMac, MacBook & Mac Pro family. After registration it erases all attached disks with 24 international data sanitizing standards including US DoD 5220.22-M and allows parallel erases.

Boot Disk Creator and Boot Disks are not supplied for macOS / OS X because newest Apple M1/M2 processors much differ from Intel architecture and do not support Windows-based or Linux-based bootable environments. If purchased commercial version, you can still request Boot Disk Creator for macOS /OS X plus related Boot Disks from us, however prepared bootable media will boot and erase the only legacy Intel-based Macs (not M1/M2).

MacOS Application:

Apple OS X 10.12+ or macOS
50MB free disk's space
2GB+ RAM to operate
iMac, MacBook, Mac Pro family
Attached HDD/SSD, SATA/eSATA, USB/USB3 or Memory Card storage to sanitize


Parallel Erasing

True parallel erasing of two disks at the same time, providing independent erase & wipe sessions

Wipe out unused space

Unused space on all disks can be wiped out by overwriting data securely using One Pass Zeros data destruction method

Disk inspection tools

Powerful disk examination tools such as File Browser & Disk Viewer give you a complete overview of your hard drives

Reports & Certificates

After sanitizing completion, work results can be printed or saved in PDF and exported to XML

  Freeware Professional

Parallel erasing of multiple disks at the same time, independent erase & wipe sessions

2 disks 2+ disks

Erasing disks with One Pass Zeros sanitizing standard


Support for more than 20 international erasing standards including US DoD 5220.22 M and User Defined method


Command Line parameters used in scripting allow to automate erase procedures (Batch Mode)


Certificates can be customized with company's logo & comments can be easily added to certificates for each session


User defined erase method can specify custom pattern for each pass using even hexadecimal (HEX) values


Detects, displays and resets/erases Hard Disk Drive hidden zones (HPA/DCO areas)


Ability to send e-mail reports via pre-configured FREE SMTP account at


Save Log & Shutdown PC option after erase completed


Fingerprint including sanitizing status can be placed to disk's first sector & displayed after boot up the disk


Displays information about all volumes, partitions, hard disks, external USB disks & Memory Cards currently connected


Wipes out unused space on all disks completely by securely overwriting data on the physical level


Support for wiping out unused sectors on Apple HFS+, Linux Ext2/Ext3/Ext4, Unix UFS/XFS/JFS & FAT/exFAT/NTFS file systems


Supports all possible I/O interfaces: IDE / USB / SATA / eSATA / SSD / SCSI disks, LUN / RAID disk arrays


Supports large-size disks (more than 4TB in size) & new disks having 4kb sector size


Built-in Hex Viewer allows to inspect raw disk's sectors: MBR, volume boot sectors, file system records & data file clusters


Very easy to use: intuitive user interface for beginners, as well as a powerful command line mode for advanced users


Supports fixed disks (HDD), Solid State Disks (SSD), Memory Cards and USB/USB3 external devices


Supports MBR and GPT (GUID Partition Table) style partitioning for wiping/erasing of volumes


Certificate can be displayed after erase/wipe completion and saved as PDF


Erases physical disks, partitions, logical drives & even unused disk space


Sanitizing Hard Disks - Erase Options

KillDisk Desktop

Parallel Disk Erasing is in Progress

Parallel Disk Erasing is in Progress

Erasing Complete - Sanitizing Certificate

Erasing Complete - Sanitizing Certificate (PDF)
More screenshots

Active@ KillDisk Overview

Advanced Disk Erasing Techniques

Data Recovery

Data Utility

Data Security

Data Backup

CD/DVD Tools