Insufficient Flash space for cisco switch faults

After the FLASH space is insufficient, I specially query the hardware configuration of the 6509 core device. The default Flash of the 6509 standard configuration is 64 MB, and the standard IOS size is 32.1 MB, the IOS 12.2 (17a) SX version to be upgraded has a size of 40.6 MB. In this case, it seems that the space is insufficient. However, this problem is well solved. The original IOS in Flash is deleted and then uploaded. So enter the command: Router # delete sup-bootflash: s72033-pk9sv-mz.122-14.SX1.bin

And then upload it. Prompt message or insufficient space! At this time, the switch IOS has been deleted. If the power is accidentally lost or restarted, the switch will not start. Use the show command on the management interface to check whether the IOS file is missing, but the space is more than 30 mb, that is, flash is not cleared.

At this time, I think that the switch must be restarted to take effect after I deleted the vlan. dat file, but it is absolutely impossible to restart it now. What should I do? On the Cisco website, find useful information and finally find a command squeeze, which is used to completely clear deleted files, just like clearing the recycle bin. Run:

Router # squeeze sup-bootflash: run the SHOW command to check whether the Flash has been completely cleared and the available space is 64 MB. Upload the file over FTP. After a few minutes, you will see the success message displayed on the screen. Reload the file and run the show flash command to check that the IOS version has changed to 12. 2 (17a) SX. Plug the new module WS-X6548-GE-TX a try, all OK, the new module can run normally.

Experience Summary: The work that we thought was easy to complete was a trigger. It seems that the upgrade of high-end products is also very complicated, and many links that we did not pay attention to will encounter one or another problems. This troubleshooting also makes me understand the truth that there is no end to the technology. It is the best way to go to the official website to query problems.

There is also the need to think twice before doing things. If FLASH is deleted and RELOAD is taken for granted, the switch cannot be started, and the consequences will be very serious. Please stop thinking for 30 seconds before the operation can often reduce a lot of unnecessary losses.