Gentoo Archives: gentoo-user

From: Ognjen Bezanov <ognjen@×××××××××.com>
To: gentoo-user@l.g.o
Subject: [gentoo-user] Help with ramdisk
Date: Wed, 17 Aug 2005 16:58:10
Message-Id: 43036B05.2090705@mailshack.com
1 Hi all,
2
3 Im building an x86 embedded distro using gentoo. Now i have been rather
4 successful. I have built the whole system and it works, while only
5 taking up 9mb (when gzipped).
6
7 Now my question is how to get linux to load the gzipped image file into
8 a ramdisk and use it as a root filesystem.
9
10 Running the system directly from the CF card works great, but when
11 trying to get it to run it in ram it fails
12 with "kernel panic: VFS: Unable to mount root fs on unknown-block(1,0)".
13
14 My attempt at running the system from ram is as follows:
15
16 (grub config file):
17
18 kernel /vmlinuz initrd=/rootfs.gz root=/dev/ram0
19
20 the rootfs.gz file is ~10Mb, and when uncompressed is an 100mb image
21 (most of the image is free space to
22 allow for future additions, this is a test bed).
23
24
25 Now I presume this is probably what is incorrect, in which case can
26 anyone help me regarding how to use
27 ramdisks as root devices. (googling about tells me that the initrd image
28 is not the root image, but rather
29 a pre-root mounting fs to prepare the system for booting).
30
31 P.S Please CC me as this mailinglist doesnt play nice with my email
32 account. thanks!
33
34 --
35 gentoo-user@g.o mailing list

Replies

Subject Author
Re: [gentoo-user] Help with ramdisk Matthew Cline <matthew.cline@×××××.com>
Re: [gentoo-user] Help with ramdisk Richard Fish <bigfish@××××××××××.org>