DRAC update DUP fails on DTK 4.3 embedded Linux

DRAC update DUP fails on DTK 4.3 embedded Linux

The following error may occur when trying to update iDRAC6 or iDRAC7 with the Dell Update Package of any version:

Failed to access virtual USB device



It has been determined that the iDRAC7 DUP does not detect the temporary virtual USB partition presented by DRAC for copying over the update payload. Simply add the following command before proceeding with running the iDRAC7 DUP:

ln –fs /proc/mounts /etc/mtab

The DUP will now properly detect the USB device to proceed applying the iDRAC7 update. Dell Engineering has fixed this issue with DTK 4.4 for Linux.


the iDRAC6 update package also requires the aforementioned symlink. However, this USB error will still occur if any iDRAC6 virtual media is connected. This means that the DTK .iso image itself cannot be mounted remotely and booted to in order to update iDRAC6 firmware. It also means vFlash partitions cannot be mounted, either, if a vFlash card and license is installed.

DTK must be burned to a CD for booting or be converted to a USB flash drive or booted from PXE. And once booted to DTK virtual media must be disabled/detached. You can do this either manually via the iDRAC6 web GUI or using DTK commands:

DTK commands:

1. At prompt enter "syscfg --virtualmedia=disable"

2. Then "syscfg --vflash=disable"

Web GUI:

1. System > Media/Console tab > Configuration

2. Change "Virtual Media" menu to "Detach"

3. System > vFlash (if applicable)

4. Uncheck the "Enabled" checkbox

Quick Tips content is self-published by the Dell Support Professionals who resolve issues daily. In order to achieve a speedy publication, Quick Tips may represent only partial solutions or work-arounds that are still in development or pending further proof of successfully resolving an issue. As such Quick Tips have not been reviewed, validated or approved by Dell and should be used with appropriate caution. Dell shall not be liable for any loss, including but not limited to loss of data, loss of profit or loss of revenue, which customers may incur by following any procedure or advice set out in the Quick Tips.

Article ID: QNA39993

Last Date Modified: 04/02/2014 12:00 AM

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