Improve setup process

[vinc]

This PR is a continuation of #595 by @kidharb to improve the setup process

• Use warning macro when MFS is not present
• Use error macro when /ini/boot.sh is not present
• Remove diskless mode message
• Add option to setup the system on a RAM disk from the install command

[vinc]

Here's the warning when MFS is not present:

And here's the error when /ini/boot.sh is not present:

[vinc]

Users will now be able to setup the system on a RAM disk directly from the install command instead of having to run memory format first:

/
> install
Welcome to MOROS v0.10.2 installation program!

Proceed? [y/N] y

Listing disks ...
Path            Name (Size)
/dev/ata/0/0    QEMU HARDDISK QM00001 (32 MB)
/dev/mem        RAM DISK

Formatting disk ...
Enter path of disk to format:

[kidharb]

And here's the error when /ini/boot.sh is not present:

How do you recover in the case of missing /ini/boot.sh?

Do we need to create it and add?

user login
shell

[vinc]

How do you recover in the case of missing /ini/boot.sh?

Do we need to create it and add?

user login
shell

The quickest way would be to just run install again that will recreate any missing files on the mounted file system. That's how I update the system whenever I change something: I delete the files and run install again.

But you can also create your own boot script indeed, for example sometimes I just have lisp to boot into the Lisp interpreter, and on my test computers I add env TZ 3600 in winter to set the correct timezone.

Here's the current version of the manual: http://moros.cc/manual.html