Question : Cisco 1760 router has 2 flash

I uploaded a new flash but fat fingered the erase current flash.  Now I have 2 flashes and it's not booting from the one I want.
How do I erase the one I don't want and how can I tell it what flash to boot from if I didn't want to erase the other ios?
#show flash
System flash directory:
File  Length   Name/status
  1   20524548  c1700-advipservicesk9-mz.124-7.bin  <-- original one
  2   9635228  c1700-advsecurityk9-mz.123-26.bin  <-- i want this one
[30159904 bytes used, 3132380 available, 33292284 total]
32768K bytes of processor board System flash (Read/Write)

Answer : Cisco 1760 router has 2 flash

NVPN-LosAngeles_C1760#del flash:\c1700-advipsevicesk9-mz.124-7.bin
Delete filename [\c1700-advipsevicesk9-mz.124-7.bin]? y
Delete flash:y? [confirm]y
%Error deleting flash:y (No such file or directory)

Old IOS wasnt deleted! You dont need a backslash after the ":"
try this:

# delete flash:c1700-advipsevicesk9-mz.124-7.bin
Press twice enter , DONT type "y"

After that "sh flash" should sho you only the new IOS
Finally paste these:

conf t
boot system flash c1700-advsecurityk9-mz.123-26.bin
exit
wr

reload the router