Linux中的Ramdisk与Initrd

redice # mkfs.ext2 /dev/ram0
mke2fs 1.38 (30-Jun-2005)
Filesystem label=
OS type: Linux
Block size=1024 (log=0)
Fragment size=1024 (log=0)
2048 inodes, 8192 blocks
409 blocks (4.99%) reserved for the super user
First data block=1
1 block group
8192 blocks per group, 8192 fragments per group
2048 inodes per group

Writing inode tables: done
Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 24 mounts or
180 days, whichever comes first.  Use tune2fs -c or -i to override.

redice # mount /dev/ram0 /mnt/rd
redice # ls /mnt/rd
lost+found
redice # mount
/dev/hda2 on / type ext3
proc on /proc type proc (rw)
/dev/ram0 on /tmp/xxx type ext2 (rw)

redice # df -h /dev/ram2
Filesystem            容量  已用 可用 已用% 挂载点
/dev/ram0             7.8M  1.0K  7.4M   1% /mnt/rd

redice # umount /mnt/rd
redice # mkfs.minix /dev/ram0
2752 inodes
8192 blocks
Firstdatazone=90 (90)
Zonesize=1024
Maxsize=268966912

redice # mount /dev/ram0 /mnt/rd
redice # df -h /dev/ram0
Filesystem            容量  已用 可用 已用% 挂载点
/dev/ram0             8.0M  1.0K  8.0M   1% /mnt/rd

# grub.conf -
default=0
timeout=10
splashimage=(hd0,0)/grub/splash.xpm.gz
title Redice Linux
        root (hd0,0)
        kernel /vmlinuz ro root=LABEL=/ hdc=ide-scsi ramdisk_size=16384
        initrd /initrd