From owner-freebsd-questions@FreeBSD.ORG Wed Aug 25 12:42:10 2010 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id C0B3910656B1 for ; Wed, 25 Aug 2010 12:42:10 +0000 (UTC) (envelope-from acruhl@gmail.com) Received: from mail-iw0-f182.google.com (mail-iw0-f182.google.com [209.85.214.182]) by mx1.freebsd.org (Postfix) with ESMTP id 86FC88FC26 for ; Wed, 25 Aug 2010 12:42:10 +0000 (UTC) Received: by iwn36 with SMTP id 36so660935iwn.13 for ; Wed, 25 Aug 2010 05:42:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:cc:content-type; bh=L7x1MuNH9O3EK+RM8kppDfJ1q9StwljSiyPDywjHDoA=; b=ZHiKkZD/lW+B8p65pEkcxvKY8HGX+TaZo6Tds8CoFy9puOvzviH/+dumVMH7vEetbR 4qO/0oGGwxwIWuXbxAP9W0TwdVMQuZQjkU5LDjomfx+jM/TbbAiGGbOme0BlxblR7K9n KWBsZ9q2DQwmlbulfLGXNsYQgTludnIft+g5k= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=Z8NT3XMVspjWaN2GSyt/yRsMO4x903RMLwp+iNd2lWQXangBpzI9qbLVhgjhCpneQJ XlLOnIMtJHif0+CS1IqQP08XZdF8FM80op9PtuWGXZWoH1/yhqmAdZhdxcSVFLAiQcFP cFR3D7A/dzp/V144OBklHZPZ/KkX3ItZuS46g= MIME-Version: 1.0 Received: by 10.231.187.194 with SMTP id cx2mr9189702ibb.165.1282738345383; Wed, 25 Aug 2010 05:12:25 -0700 (PDT) Received: by 10.231.158.131 with HTTP; Wed, 25 Aug 2010 05:12:25 -0700 (PDT) In-Reply-To: <4c74f699.3qsMLYgGMzfteMje%mueller6727@bellsouth.net> References: <4c74f699.3qsMLYgGMzfteMje%mueller6727@bellsouth.net> Date: Wed, 25 Aug 2010 05:12:25 -0700 Message-ID: From: Andy Ruhl To: Thomas Mueller Content-Type: text/plain; charset=ISO-8859-1 X-Mailman-Approved-At: Wed, 25 Aug 2010 12:55:49 +0000 Cc: Bruce Cran , Polytropon , freebsd-questions@freebsd.org, Christer Solstrand Johannessen , =?ISO-8859-1?Q?Samuel_Mart=EDn_Moro?= Subject: Re: Lingua franca file system Linux-NetBSD-FreeBSD? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 25 Aug 2010 12:42:10 -0000 2010/8/25 Thomas Mueller : > From "Andy Ruhl" : > >> I thought UDF was supposed to be the solution to all of this. A friend >> of mine had a USB external hard disk formatted with UDF and it worked >> fine with both Linux and Windows. I think it's not as common for >> formatting magnetic disk based filesystems as it probably should be >> though. It's mostly used for DVDs. > > I've heard of UDF, recognized it as a file system for DVDs, can't find it specifically on my system but find two DVD-related packages. > > /var/log/packages/dvd+rw-tools-7.1-i486-1 > /var/log/packages/libdvdread-4.1.3-i486-1 $ uname NetBSD $ which newfs_udf /sbin/newfs_udf http://en.wikipedia.org/wiki/UDF_File_System It appears that NetBSD, Mac OSX, Linux (later 2.6) and Windows (later versions) support it the best. FreeBSD and OpenBSD, AIX and Solaris claim some level of support for it as well. Unless you're using FAT32 or a network CIFS, it appears to be the best supported filesystem to me, given that you are using the proper version of UDF. I'm guessing a Windows partition layout would be most compatible as well on a magnetic disk. Also note that UDF claims to be able to write and rewrite files directly to RW optical media. I've never used it much in practice though. Andy