Krylack

Disk utility for Windows

Volume Serial Number Editor

View, change, back up and restore the Volume Serial Number of your disks and USB drives.

View, change, back up and restore the Volume Serial Number of your disks and drives, safely, on drives you own or administer. It changes only the file-system serial, not the drive's physical hardware serial.

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One-time purchase · a perpetual license, not a subscription · free lifetime upgrades.

Volume Serial Number Editor screenshot

Everything Volume Serial Number Editor does

Change and restore the Volume Serial Number of your disks and USB drives, safely, on every modern Windows. Built for real disk administration, on drives you own or manage.

All file systems
FAT, FAT32, exFAT and NTFS, including the full 64-bit NTFS serial.
BitLocker-ready
Change unlocked BitLocker drives, including the Windows drive, through BitLocker.
Safe by design
Backs up the boot sector first and rolls back automatically on any error.
GUI and command line
A window, or the volsn tool with JSON output for scripts and automation.
Every modern Windows
Windows 7 through 11, in 32-bit, 64-bit and ARM64 editions.
Code-signed
Signed installer and application, downloaded directly from us.

Editions and pricing

Download a free trial of any edition, or buy a license - a one-time purchase with free lifetime upgrades. The trial is fully working, with one limit: it can only set the serial to 1234-5678 (and restore a backup of that change).

Volume Serial Number Editor
GUI Version
DownloadBuy Now · $14.95
Volume Serial Number Editor Command Line
Command Line Version (volsn)
DownloadBuy Now · $12.95
Volume Serial Number Editor + Command Line Bundle Best value
GUI + Command Line, one license
Buy Now · $19.95

Unlimited Company License is available for use on more than 10 computers. It covers both the GUI and command-line editions and allows unlimited use across your company, with free lifetime upgrades. Order the unlimited company license - $149.95.

Common uses

What is a volume serial number?

The vol command in Windows 11 showing a Volume Serial Number A volume serial number is the XXXX-XXXX identifier Windows generates and assigns to a disk volume when it is formatted (each X is a hexadecimal digit, 0 to F). It is separate from the drive's physical hardware serial number. Normally there is no supported way to change it without reformatting the volume; Volume Serial Number Editor changes it directly.

What it changes, and what it doesn't

Command-line edition (volsn)

Prefer to automate it? The volsn command-line edition does the same job from the console, so you can script it or run it across many machines. List volumes with volsn list, read one with volsn get, set a value with volsn set, or restore a backup with volsn restore, and every command supports --json output. Download the command-line edition to try it.

volsn command-line edition: volsn list, volsn set and volsn get output

Frequently asked

Which file systems are supported?

FAT, FAT32, exFAT and NTFS, on local disks, USB drives and memory cards, including the full 64-bit NTFS serial.

Does it reformat the drive?

No. It changes the Volume Serial Number directly and leaves your files in place. It also backs up the boot sector before every change, so you can restore the previous serial with one click.

Does it change the drive's hardware serial number?

No. It changes only the file-system Volume Serial Number, the XXXX-XXXX value Windows shows with the vol command or in a drive's Properties. The drive's physical hardware serial is not touched.

Can it change a BitLocker drive or the Windows drive?

Yes. It changes unlocked BitLocker drives, including the Windows drive, writing the serial through BitLocker without affecting the encryption. Locked drives are declined. On the Windows drive the new serial takes effect after a restart.

Is there a command-line version?

Yes. The volsn command-line edition does the same job from the console, with JSON output for scripts and automation across many machines.