<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"> <HTML> <HEAD> <META NAME="GENERATOR" CONTENT="SGML-Tools 1.0.9"> <TITLE>UMSDOS HOW-TO: Different topics about the operation of Umsdos</TITLE> <LINK HREF="UMSDOS-HOWTO-5.html" REL=next> <LINK HREF="UMSDOS-HOWTO-3.html" REL=previous> <LINK HREF="UMSDOS-HOWTO.html#toc4" REL=contents> </HEAD> <BODY> <A HREF="UMSDOS-HOWTO-5.html">Next</A> <A HREF="UMSDOS-HOWTO-3.html">Previous</A> <A HREF="UMSDOS-HOWTO.html#toc4">Contents</A> <HR> <H2><A NAME="s4">4. Different topics about the operation of <EM>Umsdos</EM></A></H2> <P> <P> <H2><A NAME="ss4.1">4.1 Mount option</A> </H2> <P> <P>You can use the same mount option as for the Ms-DOS file system. The option conv= is questionable on a <EM>Umsdos</EM> system. I suggest to avoid it. Mostly the option you may want to look at are <P> <UL> <LI>uid=</LI> <LI>gid=</LI> <LI>umask=</LI> </UL> <P>Just remember that <EM>Umsdos</EM> manage non promoted directory the same way as the <EM>Ms-DOS</EM> file system. The option above will apply globally to all non promoted directory. <EM>uid</EM> setup the default owner, <EM>gid</EM> setup the default group and <EM>umask</EM> setup the default permissions. <P> <H2><A NAME="ss4.2">4.2 How to set defaults for the root</A> </H2> <P> <P>umssetup was created to provide at run time default ownership for the root partition. For other <EM>Umsdos</EM> partition, mount option may be used or umssetup. Storing mount option in /etc/fstab is the prefered way for non root partition. Here is an example. Put this in /etc/rc.d/rc.S. <P> <BLOCKQUOTE><CODE> <PRE> /sbin/umssetup -u jack -g group -m 0755 / </PRE> </CODE></BLOCKQUOTE> <P> <H2><A NAME="ss4.3">4.3 To swap or not to swap</A> </H2> <P> <P>Using a swap file is generally slower than a swap partition. It is however much more flexible. You can setup a swap file in a <EM>Umsdos</EM> partition the same way you do it for any other <EM>Linux</EM> file systems. For example, to setup a 8 megabytes swap file in the root directory: <P> <BLOCKQUOTE><CODE> <PRE> dd if=/dev/zero bs=1024k count=8 of=/swap mkswap /swap 8192 sync swapon /swap </PRE> </CODE></BLOCKQUOTE> <P>Once done, you can put the following line in /etc/fstab <P> <BLOCKQUOTE><CODE> <PRE> /swap swap swap default </PRE> </CODE></BLOCKQUOTE> <P>And the swap file will be activated at each boot (There is generally a "swapon -a" in <CODE>/etc/rc.d/rc.S</CODE>). <P> <HR> <A HREF="UMSDOS-HOWTO-5.html">Next</A> <A HREF="UMSDOS-HOWTO-3.html">Previous</A> <A HREF="UMSDOS-HOWTO.html#toc4">Contents</A> </BODY> </HTML>