Installation guide

2 Installing OS-9 V2.4.5 OS-9 V2.4 on EUROCOM-17

6 Software Manual

2.3 Updating OS-9 V2.X to V2.4.5

Installing the software on a harddisk already containing an OS-9 (older

version or version for a different CPU) may cause trouble if modules are

mixed between different releases. The following procedure is a save way

to avoid this:

0. Make a complete backup of the harddisk.

1. Generate a bootable floppy with the old version of the operating

system.

2. Load the back utility into memory and change the current directory to

harddisk.

$ load back

$ chd /h0

Rename the directories CMDS, C, LIB, SYS, DEFS, IO, SYSSRC,

README and startup file (e.g., CMDS.OLD, C.OLD, etc.).

$ rename CMDS CMD.OLD

$ rename C C.OLD

$ rename startup startup.old

3. Copy the all floppy disks in ascending order to the harddisk by using

the back utility.

$ back /d0 /h0 -r

Use the '-r' (rewrite) option to be sure to overwrite the old modules.

In some cases the OS-9 was delivered an addendum disk with new or

bugfixed modules. See the file ReadMe.Addendum on this disk for further

details.