From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Mon, 06 Mar 2006 12:24:25 +0000 (GMT) Received: from 202-47-55-78.adsl.gil.com.au ([202.47.55.78]:37859 "EHLO longlandclan.hopto.org") by ftp.linux-mips.org with ESMTP id S8133371AbWCFMYD (ORCPT ); Mon, 6 Mar 2006 12:24:03 +0000 Received: (qmail 7240 invoked from network); 6 Mar 2006 22:32:13 +1000 Received: from beast.redhatters.home (HELO ?10.0.0.251?) (10.0.0.251) by 192.168.5.1 with SMTP; 6 Mar 2006 22:32:13 +1000 Message-ID: <440C2CE8.9090204@gentoo.org> Date: Mon, 06 Mar 2006 22:36:56 +1000 From: Stuart Longland Organization: Gentoo Foundation User-Agent: Mozilla Thunderbird 1.0.7 (X11/20051029) X-Accept-Language: en-us, en MIME-Version: 1.0 To: linux-mips@linux-mips.org Subject: Re: does the linux support rootfs on vfat? References: <50c9a2250603042217l475e84pc9ab7ce87c40eb76@mail.gmail.com> In-Reply-To: <50c9a2250603042217l475e84pc9ab7ce87c40eb76@mail.gmail.com> X-Enigmail-Version: 0.93.0.0 OpenPGP: id=63264AB9; url=http://dev.gentoo.org/~redhatter/gpgkey.asc Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enigCC11A17E0815C80708E22A58" Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 10734 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: redhatter@gentoo.org Precedence: bulk X-list: linux-mips This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigCC11A17E0815C80708E22A58 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit (Gah... I meant this to be sent publically, not just privately ;-) zhuzhenhua wrote: > if in my product based ide disk, i want to it to support the > u-disk(with vfat fs), and can i set the root fs as vfat too? > if use vfat as rootfs, what's disadvantage of the selection? In theory, you could... BUT... FAT32 (and every other FAT variant) lacks: - Ownership metadata (uid/gid fields) - Permissions (mode: read/write/execute/sticky/suid/sgid) - Links (both hard-links and symbolic links) ... probably character devices, block devices, pipes and other numerous devices that 99.999999% of distributions rely on. Now, there is UMSDOS, which uses additional special files to emulate these on top of a standard MS-DOS filesystem ... mind you, it predates VFAT by many years, and so I'm not sure what it's support is like for long filenames. I also haven't seen it in the kernel File System menu for some time now. I'd recommend using an external initrd... or an initramfs-based kernel. That way it's just one or two files, not one or two hundred. ;-) -- Stuart Longland (aka Redhatter) .'''. Gentoo Linux/MIPS Cobalt and Docs Developer '.'` : . . . . . . . . . . . . . . . . . . . . . . .'.' http://dev.gentoo.org/~redhatter :.' International Asperger's Year (1906 ~ 2006) http://dev.gentoo.org/~redhatter/iay --------------enigCC11A17E0815C80708E22A58 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFEDCzruarJ1mMmSrkRAvY1AJ4jJDt6iJ0uaZPT+zqhHrYSdZIZJACfb5YK o29h1orWv/OFvji4gCJ/f+M= =Hw/J -----END PGP SIGNATURE----- --------------enigCC11A17E0815C80708E22A58--