Subject: Re: Creating real Ram Disk
To: Jeff Arenberg <jeffa9999@yahoo.com>
From: Andrew Cagney <cagney@mac.com>
List: port-macppc
Date: 01/03/2002 03:09:33
> I've read all the posts on the web and have found nothing that actually
> describes the exact steps to creating a ram disk with ffs. I am creating a
> pure RAM based system and I have configured a ram disk with the miniroot
> that gets inserted in the kernel, but now I want a second large (256MB) ram
> disk for file storage. I believe the order is something like:
>
> 1. Mdconfig /dev/md0x size &
> 2. Something about creating disklabel
> 3. Something about newfs
> 4. Something about mount_mfs
>
> But I have no clue what the actual commands are for steps 2, 3 and 4.
> Everything I've tried yields an error. So for the record, can someone
> please list the steps with the correct commands.
I've got:
$ grep tmp /etc/fstab
/dev/wd0b /tmp mfs rw
giving:
$ df -k /tmp
Filesystem 1K-blocks Used Avail Capacity Mounted on
mfs:124 989776 4 940283 0% /tmp
however, something like:
# mount_mfs swap /mnt
also just works. Need ``file-system MFS'' in your kernel mind. I don't
know about all the other steps.
Andrew