---
title: "Boot issues with Blancco Drive Eraser"
canonical: "https://support.blancco.com/space/KB/11633122/Boot%20issues%20with%20Blancco%20Drive%20Eraser"
format: markdown
---
| **Issue / Error message** | **Cause** | **Resolution** |
| --- | --- | --- |
| **<span style="color: #000000">"Error: you need to load the kernel first"</span>**<br>error: disk `loop' not found.  
error: disk `loop' not found.  
error: you need to load the kernel first.  
  
Press any key to continue... | <span style="color: #000000">The problem is caused by the file name of the ISO image. The file name should contain </span>**<span style="color: #000000">no extra space or special characters</span>** | <span style="color: #000000">In this example, the fix is to remove the empty spaces</span><span style="color: #000000"> from the file name. </span><br>- <span style="color: #000000">Try renaming the 'Blancco 5 server .iso' to 'Blancco_5_server.iso' </span>
- <span style="color: #000000">Format and create the bootable USB again using the latest version of Blancco USB Creator tool. Download the software from </span>[<span style="color: #000000">this link</span>](https://go.docs.blancco.com/wiki/spaces/KB/pages/11633303)<span style="color: #000000">.</span> |
| **<span style="color: #000000">"Error 27: Unrecognized Command"</span>**<br>Booting Blancco_5_server (1).iso  
Find --set-root --ignore-floppies --ignore-cd //images//Blancco_5_server (1).iso  
Error 27: Unrecognized Command  
  
Press any key to continue.... | <span style="color: #000000">The problem is caused by the file name of the ISO image. The file name should contain </span>**<span style="color: #000000">no extra spaces</span>**<span style="color: #000000"> </span> | <span style="color: #000000">In this example, the fix is to remove </span><span style="color: #000000">"(1)" from the file name.</span><br>- <span style="color: #000000">Try renaming the Blancco_5_server (1).iso to </span><span style="color: #000000">Blancco_5_server_1.iso </span>
- <span style="color: #000000">Format and create the bootable USB stick again using the Blancco USB Creator tool.</span><br><span style="color: #000000">It is highly recommended that there should be no special characters in the file name. </span> |
| **<span style="color: #000000">"Error 13: Invalid or unsupported executable format"</span>**<br>Booting Blancco_5_server.iso  
(hd0,0)  
chainloader (hd32)  
Error 13: Invalid or unsupported executable format  
  
Press any key to continue.... | <span style="color: #000000">The problem is caused by a bad or incompatible USB stick. The USB is mounted and detected as (fd0) device by the host system. </span> | - <span style="color: #000000">Make sure that the </span>**<span style="color: #000000">format option is enabled</span>**<span style="color: #000000"> in USB creator when creating your bootable USB stick.</span> |
| <span style="color: #000000">**"Kernel panic" **</span><br><span style="color: #000000">or no specific error message is displayed, but the </span>**<span style="color: #000000">USB boot just does not work</span>** | <span style="color: #000000">Large sized USB sticks (ie.</span><span style="color: #000000"> 64GB) may not work if they can't be formatted to </span>**<span style="color: #000000">FAT32</span>** | - <span style="color: #000000">Sometimes changing the used USB memory stick brand or model (different size) can make a difference.</span>
- **Encrypted** or **password protected** USB sticks are **not supported** for USB booting.
- Some of the most reliable models for USB booting are known to be **<span style="color: #000000">8 GB to 16 GB</span>**<span style="color: #000000"> Kingston DataTraveler (non-encryped or non-password locked)</span><span style="color: #000000">. </span>
- <span style="color: #000000">If the same USB stick fails to boot in different computer models, it is recommended to try another USB stick model. </span>
- <span style="color: #000000">Make sure </span>**<span style="color: #000000">format option is enabled</span>**<span style="color: #000000"> when creating the bootable USB. </span>
- <span style="color: #000000">Make sure </span><span style="color: #000000">ISO image </span>**<span style="color: #000000">file is not corrupted</span>**<span style="color: #000000"> by downloading it again or testing it by booting from a CD or Virtual Machine for example. </span>
- <span style="color: #000000">Check that the </span>**<span style="color: #000000">file name does not contain empty spaces or special characters</span>**<span style="color: #000000"> and try creating the USB stick again with the 'Format' option selected using the latest </span><span style="color: #000000">version of Blancco USB Creator tool. Download the software from </span>[<span style="color: #000000">this link</span>](https://go.docs.blancco.com/wiki/spaces/KB/pages/11633303)<span style="color: #000000">.</span> |