We have several WS-C3750G-24PS running on 12.2(50)SE3. I need to upgrade the switches with 15.2.4E10(MD). First I need to upgrade to 12.2(53)SE2 as that is the supported by minimum Cisco IOS release. The only IOS-sw available is the 12.2.55-SE13 (MD) so I'll upgrade to that one first.
My issue is the memory;
SWITCH# sh flash:
Directory of flash:/
3 -rwx 4035 Oct 28 2019 12:29:01 +01:00 private-config.text
4 -rwx 5144 Mar 1 1993 01:01:24 +01:00 multiple-fs
5 -rwx 1096 May 4 2016 11:27:04 +02:00 vlan.dat
6 -rwx 16483 Oct 28 2019 12:29:01 +01:00 config.text
8 drwx 192 Sep 14 2009 15:48:39 +02:00 c3750-ipservicesk9-mz.122-50.SE3
32514048 bytes total (17469952 bytes free)
SWITCH#dir
Directory of flash:/c3750-ipservicesk9-mz.122-50.SE3/
9 -rwx 12239852 Sep 14 2009 15:47:31 +02:00 c3750-ipservicesk9-mz.122-50.SE3.bin
10 drwx 4608 Sep 14 2009 15:48:39 +02:00 html
429 -rwx 676 Sep 14 2009 15:48:39 +02:00 info
17 MB is enough for the 12.2.55, which is 14 MB. However, the 15.2-software is 24 mb (bin-file) or 30 mb (tar-file). How do you suggest I go about to do this. If I delete the .bin-file in flash I get additional 12 MB, a total of 29 mb. That's enough to install the .bin-file which is 24 mb. Then I could upgrade using this procedure;
#copy tftp: flash: (copy the bin-file to the switch)
#boot system switch all flash:/image_name.bin
#sh boot (verify boot procedure)
#reload
For stacked switches I need to copy the bin-file locally from flash1: to flash2:
I know it's considered risky to delete the running .bin-file, which is why I'd like to put out this question and get some advice from the experts.
