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July 9th, 2025 09:25
Dell Command Update cmd parameter "-reboot" broken
We run dcu-cli.exe via a script during a WinPE-installation of new devices. In that the prompt looks like this:
dcu-cli.exe /scan
dcu-cli.exe /applyUpdates -forceUpdate=enable -autoSuspendBitLocker=enable -reboot=disable -outputLog=C:\Temp\DCU-InstallOutput.log
On the previous version 5.4.0 this was not a problem, however now with (Dell Command Update for Windows Universal) 5.5.0 the reboot parameter appears to be doing nothing anymore. Reviewing the logs shows that after the completion of driver installations including a needed reboot, the process exits with code 1. All normal. However immediately then the operating system reboots instantly, despite the set option -reboot=disable.
This is not optimal because it interrupts the WinPE-setup process of devices.
It appears this was an issue in the past before, with version 4.1, though sadly there is no evidence if that was ever further investigated from that post:
https://www.dell.com/community/en/conversations/systems-management-general/dcu-cli-ignoring-the-rebootdisable-flag-dcu-cli-41/647f922af4ccf8a8de3d8362
AggregatedMammothWool
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July 10th, 2025 10:53
Update:
It appears if you do not set the -reboot option at all, the device will also not reboot, even if needed. However, this was when running DCU with a local administrator.
In the setup process we use, it is run by SYSTEM. Whether -reboot is set or not did not matter, the device rebooted instantly after DCU was done anyway.