Customer wanted to upgrade Quidway S2700-52P-PWR-EI from the S2700-52P-EI-V100R006C03.CC to the newest image S2700-52P-EI-V100R006C05.CC and couldn't perform the upgrade because they would need firstly to store the cc file in to switch's flash and free space was not enough for it.
<Huawei>delete flash:/S2700-52P-EI-V100R006C03.CC
Info:This is Next startup system software.If you delete it,there is no software to reboot successfully!Confirm to delete the file? [Y/N]:y
Delete flash:/S2700-52P-EI-V100R006C03.CC?[Y/N]:y
Info: Deleting file flash:/S2700-52P-EI-V100R006C03.CC...
Error: Invalid operation, this is system startup file.
Error: Deleting file flash:/S2700-52P-EI-V100R006C03.CC failed.