SFS or OS 3.9 file sys. question

[melott]

I probably should know this .... but .... :-D

What file system does OS 3.9 use ?
And can I install that System on an OS 3.1 install ?
I looked .. where do I find the file system on the
OS 3.9 install disk ?
If its SFS can it be installed over C= FastFileSystem ?
I'm wanting to create an OS 3.1 Dir to run from for older
software compatability but my main Boot Dir is OS 3.9 and
I have a 9 gig HDD, (thats the problem).
I've made the dir and installed OS 3.1. I've made a Boot
floppy that puts me in OS 3.1 in that dir.
Now I need to install a compatable file system that will
allow me to see the whole harddrive.


Any help ?

Mel

[Thomas]

Now I need to install a compatable file system that will
allow me to see the whole harddrive.

There is no file system which can do this. You need an update for scsi.device first. Either extract OS3.9's scsi.device from the AmigaOS ROM Update and use LoadModule to load it with 3.1 or install IDEfix or the like.

Or just boot OS 3.9 and then reboot with 3.1, then the ROM updates stay in memory.

The file system which comes with 3.9 is FastFileSystem. It was updated to use NSD64 commands in order to support large hard drives. SFS is a third-party product and has to be downloaded and installed seperately. Both can be used with 3.1 (as long as scsi.device has been updated).

SFS is not compatible to FFS. If you change a partition from FFS to SFS or vice versa, it has to be formatted. You can do this one partition at a time. Different partitions can have different file systems.

SFS comes with installation instructions. They also apply to FFS, just use another dostype (a.k.a. identifier).

Bye,
Thomas