From: Robert Bridge <robert@robbieab.com>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] VFS: cannot open root device "sda2" or unknown-block(2,0)
Date: Wed, 9 Jul 2008 14:00:54 +0100 [thread overview]
Message-ID: <20080709140054.37ee91dc@pheonix> (raw)
In-Reply-To: <20080709114846.3384.1.NOFFLE@debian107.local>
On Wed, 9 Jul 2008 13:48:46 +0200
Miernik <public@public.miernik.name> wrote:
> I am installing a new system with 2008.0 on an USB pendrive as the
> only disk in the machine, and at boot I get this error:
>
> VFS: cannot open root device "sda2" or unknown-block(2,0)
> Please append a correct "root=" boot option; here are the available
> partitions:
My experience of USB drives is that they take about 20 seconds to come
up, meaning a root device on one will fail with that error message.
There are (at least) 2 working fixes that I am aware off.
The first is us an initrd to delay the mounting root until the USB
device is available. The second is to pass an argument to the kernel
that does the same thing, IIRC "sleep=30", but I have never used this
particular trick, so you will want to check it.
Either way, my money, based on my experience with using a USB
hard-disk, is on it being a problem with /dev/sda2 not being available
at mount.
Rob
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gentoo-user@lists.gentoo.org mailing list
next prev parent reply other threads:[~2008-07-09 13:00 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-09 11:48 [gentoo-user] VFS: cannot open root device "sda2" or unknown-block(2,0) Miernik
2008-07-09 13:00 ` Robert Bridge [this message]
2008-07-10 2:20 ` [gentoo-user] " Miernik
2008-07-10 13:44 ` ABCD
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