will any CD-Rom work with my A1200 with IDE Fix?
Any ATAPI-compliant CD/DVD+/-ROM/R/RW/RAM drive should work. However, different manufacturers have different opinions about what "compliant" might mean.
its asking me to put IDEfix or LoadIDE reset behind setpatch in the start-up sequence...
It should do this automatically. Do you have a key for IDEfix97 or do you use an OEM version? If you have a key, get the latest version from Aminet and install that. It does the startup-sequence change automatically.
how do I edit the start up sequence??
Load it into a text editor of your choice.
The most primitive text editor is Ed, but it's the one which comes with Workbench. Open a shell window and enter
ed s:startup-sequence
To save changes press Esc and enter x. To quit the editor without saving, press Esc and enter q. To delete an entire line press Ctrl-B.
when I receive my replacement CDrom drive- do I set it as master, or slave?
Check the one which died and set the new one to the same as the old one.
The usual rule is: set the drive as master if it is the only one on the channel, set it to slave if there is another drive on the same channel which is master. There may be only one master and one slave on one channel. Which one is master and which one is slave does not matter.
A usual IDE controller has only one channel, but with the 4-way adapter you get two channels. Remember that the 2.5" connector and one of the 3.5" connectors share the same channel.