my board has 64M sdram, when i boot nfs root, it show Mem total about 62M and if i boot initrd and then switch to nfs root, it show mem total about 54M,and freeramdisk does nothing to it. my kernel commandline is root=/dev/nfs init=/linuxrc rd_start=0x80a00000 rd_size=0x260000 ramdisk_size=8192 ip=bootp and in my initrd, the linuxrc is #!/bin/nash mount -t proc /proc /proc echo Mounting root filesystem mount -o nolock,rsize=1024,wsize=1024 --ro -t nfs 10.10.10.2:/root/nfsroot/rootfs /sysroot pivot_root /sysroot /sysroot/initrd umount /initrd/proc and in my nfs root, i type $umount initrd $freeramdisk /dev/ram0 it only flushed bufferd mem, and do nothing to the mem total. i wonder how to reused the initrd mem? BTW, if i change the kernel comandline to root=/dev/ram0 ... it will show messages as "Failed to execute /linuxrc. Attempting defaults... Kernel panic - not syncing: No init found. Try passing init= option to kernel" Thanks for any hints Best Regards zhuzhenhua
