RE: use ramdisk as root file system

[zhu shi song]

I've made one initrd to try. But when executing at
/sbin/init, linux halts.  Output log is as following:
RAMDISK: Compressed image found at block 0
Freeing initrd memory: 3687k freed
VFS: Mounted root (ext2 filesystem) readonly.
Freeing unused kernel memory: 64k freed
Warning: unable to open an initial console.
[end]
By the way, using initramfs, can I have rw root fs on
ramdisk?
tks
zhu
--- Dave Aubin  wrote:
> Here is a good way to do initramfs.  Initramfs
> becomes part of the
> kernel and
> Then executes it's programs in user space which
> makes things nice.  But
> there
> Are other advantages as well.  Feel free to read
> these while on the
> thrown;)

http://linuxfromscratch.org/pipermail/lfs-hackers/2004-June/001424.html
>

http://seclists.org/lists/linux-kernel/2004/Jul/0154.html
> http://lwn.net/Articles/14776/
>
> For my needs initramfs is a life saver, but initrd
> is good too.  Heck
> you could 
> Go NFS if you wish.
>
> Enjoy,
> Dave:)
>
> -----Original Message-----
> From: [e-mail]
> [mailto:[e-mail]] On Behalf
> Of zhu shi song
> Sent: Friday, September 03, 2004 6:53 AM
> To: [e-mail]
> Subject: use ramdisk as root file system
>
> I now can boot my QDIA6T(vt8601/vt82c686b) MB using
> hard disk as root
> file system though there is no vga turned on.  But I
> don't need HD. I
> hope I can mount RAMDisk as my root filesystem which
> can be read and
> written.  How should I do to start such work?  I
> have read some material
> about initrd but I don't understand it very clearly.
>
> tks
> zhu
>
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use ramdisk as root file system

[Peter Buckingham]

Hi zhu,

zhu shi song wrote:
> I've made one initrd to try. But when executing at
> /sbin/init, linux halts.  Output log is as following:
> RAMDISK: Compressed image found at block 0
> Freeing initrd memory: 3687k freed
> VFS: Mounted root (ext2 filesystem) readonly.
> Freeing unused kernel memory: 64k freed
> Warning: unable to open an initial console.
> [end]

i had similar problems initially. i have added the following options to 
boot/cmdline to get a standard ramdisk to work:

load_ramdisk=1 initrd=rootfs.gz network root=/dev/ram0 
ramdisk_size=536870912

let me know if that helps

peter

use ramdisk as root file system

[Stefan Reinauer]

* Peter Buckingham  [040903 18:41]:
> Hi zhu,
>
> i had similar problems initially. i have added the following options to 
> boot/cmdline to get a standard ramdisk to work:
>
> load_ramdisk=1 initrd=rootfs.gz network root=/dev/ram0 
> ramdisk_size=536870912

^^^^^^^^^ 536 Megabytes?  
:-)

Stefan

use ramdisk as root file system

[Peter Buckingham]

> > load_ramdisk=1 initrd=rootfs.gz network root=/dev/ram0 
> > ramdisk_size=536870912
>            ^^^^^^^^^ 536 Megabytes?  
>
> :-)

that is actually right, it was for some testing.. i could go into it but 
i'd have to kill you ;-)

peter