C93180YC-FX can not saving running configuration

[280120720]

my 2 new C93180YC-FX swiches has made vpc redundant by using 3 DAC cable wire.
now find after restarted it can not saved running configuration.

1. can not using wr to save.
switch1# wr ?
erase Destroys the configuration on persistent media
switch1# wr

2. switch1# copy run start
[########################################] 100%
Copy complete, now saving to disk (please wait)...
Copy complete.

3. switch1# show version
.......

Software
BIOS: version 05.47
NXOS: version 9.3(3)
BIOS compile time: 04/28/2022
NXOS image file is: bootflash:///nxos.9.3.3.bin
NXOS compile time: 12/22/2019 2:00:00 [12/22/2019 14:00:37]

Hardware
cisco Nexus9000 C93180YC-FX Chassis
Intel(R) Xeon(R) CPU D-1528 @ 1.90GHz with 32827192 kB of memory.
Processor Board ID FDO27130KDM

Device name: cunchuswitch1
bootflash: 115805708 kB
Kernel uptime is 0 day(s), 19 hour(s), 39 minute(s), 41 second(s)

Last reset at 854305 usecs after Tue Nov 21 09:44:36 2023
Reason: Reset Requested by CLI command reload
System version: 9.3(3)
Service:

plugin
Core Plugin, Ethernet Plugin

Active Package(s):

[MHM Cisco World]

There’s no write memory command on a Nexus switch. You use the copy run start command to save the configuration to NVRAM.

I think step of wr is deleted every config

I use copy run start I never use wr in nexus.

MHM

[280120720]

Yes, find no wr command. then I did using copy run start. i saw no any error.
but it can not saved after restarted.

[MHM Cisco World]

You destroy config so copy run start dont save anything.

Change the name (for test) of nsk and copy run start and then restart 

Check name.

[280120720]

Sorry,I'm not clear. how am i spposed to do? can you give an example?

[MHM Cisco World]

You mention that you done below steps

1-make config 

2-wr

3- copy run start

4-restart

5- check the config in first step and it lost 

That what you do?

[280120720]

Yes. i did.