This section explains how to create a Qumulo Core USB Drive Installer on macOS or Windows.
- USB drive (4 GB minimum)
- Qumulo Core USB installer image (to get the image, contact the Qumulo Care team)
To Create a USB Drive Installer on macOS
Open Terminal and log in as
rootby using the
Insert your USB drive and then find its disk label by using the
In the following example, the USB drive’s device label is
/dev/disk2 (external, physical): #: TYPE NAME SIZE IDENTIFIER 0: Windows_FAT_32 MY_USB_DRIVE *32.0 GB disk2
To unmount the USB drive, use your USB drive’s device label. For example:
diskutil unmountDisk /dev/disk2
To write the Qumulo Core USB installer image to your USB drive, specify the path to your image file and the USB drive’s device label. For example:
dd if=/path-to-image-file/ of=/dev/rdisk2 bs=2mNote
If you encounter an Operation not permitted error in macOS, do the following.
- Navigate to System Preferences > Security & Privacy.
- On the Privacy tab, grant Full Disk Access to Terminal.
- Restart Terminal and try the command again.
- When finished, remove Full Disk Access from Terminal.
Eject your Qumulo Core USB Drive Installer. For example:
diskutil eject disk2
To Create a USB Drive Installer on Windows
To create a USB Drive Installer on Windows, you must use a third-party application such as Rufus. We recommend Rufus because it can detect many USB storage devices (rather than only Windows-compatible ones).
- We don't recommend using other tools (such as Win32 Disk Imager) because they might encounter errors when unable to recognize the USB drive after writing data to it.
- When the operation concludes, you might not be able to view the contents of the USB drive on Windows because the drive will be formatted by using a different file system.
Insert your USB drive and run Rufus.
Under Drive Properties, select a device and the path to the Qumulo Core USB installer image.
For Partition scheme, select MBR and for Target System, select BIOS or UEFI.
Under Format Options, ensure that the File system is set to FAT32 (Default) and Cluster size is set to 4096 bytes (Default).
If prompted to download a new version of
vesamenu.c32, click No.
When the ISOHybrid image detected dialog box appears, click Write in DD Image mode and then click OK.
To confirm the operation, destroy all data on the USB drive, and image the drive click OK.