disk0: vs sup-bootdisk:

[zhaochunhong]

When I dir all, some 6504 shown up both disk0: and sup-bootdisk:, some shown just one of them only, even have samiliar module WS-SUP720-3B or VS-S720-10G, could help to explain the reason and what's different between disk0 and sup-bootdisk? and command "boot system flash" flash at here means disk0 or sup-bootdisk?

thanks,

Christina

[Leo Laohoo]

"sup-bootdisk" or "sup-bootflash" are the same.  They are the CF found INSIDE the line card which is the default location of the Supervisor's card IOS. 

"disk0:" is the external CF slot which can also be used to store IOS and other files.  

[Joseph W. Doherty]

Disclaimer

The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.

Liability Disclaimer

In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.

Posting

Actually I believe "sup-bootflash" is found on older sup720s and "sup-bootdisk" is found on newer sup720s or those that have been upgraded.  Logically, as Leo noted, they are the same, their principal difference is how much storage space they can provide.  If I also recall correctly, "sup_bootdisk" uses CF, while "sup-bootflash" does not.

[zhaochunhong]

Thanks Leo,  'boot system flash' means via sup-bootdisk?

[Leo Laohoo]

'boot system flash' means via sup-bootdisk?

Nope.  "boot system flash" is generic.  You need to specify the LOCATION of the flash.  It could be "boot system flash sup-bootdisk:" or "boot system flash disk0:", etc.