I have been trying to install gentoo on an iMac DV (an old G3 box). Since there is not enough space on the internal disk, I want /usr, /home, and /var to be an external IEEE1394 disk. In order to boot gentoo with /usr separated from root, I need an initramfs. I have been making the initramfs using the gentoo wiki as a reference: http://wiki.gentoo.org/wiki/Early_Userspace_Mounting The following is my init script for Early Userspace Mounting: ----- 1 #!/bin/busybox sh 2 rescue_shell() { 3 echo "$@" 4 echo "Something went wrong. Dropping you to a shell." 5 busybox --install -s 6 exec /bin/sh 7 } 8 9 check_filesystem() { 10 # most of code coming from /etc/init.d/fsck 11 12 local fsck_opts="" check_extra="" RC_UNAME=$(uname -s) 13 14 # FIXME : get_bootparam forcefsck 15 if [ -e /forcefsck ]; then 16 fsck_opts="$fsck_opts -f" 17 check_extra="(check forced)" 18 fi 19 20 echo "Checking local filesystem $check_extra : $1" 21 22 if [ "$RC_UNAME" = Linux ]; then 23 fsck_opts="$fsck_opts -C0 -T" 24 fi 25 26 trap 'echo "fsck was interrupted"' INT QUIT 27 28 # using our own fsck, not the builtin one from busybox 29 /sbin/fsck -p $fsck_opts $1 30 31 case $? in 32 0) return 0;; 33 1) echo "Filesystem repaired"; return 0;; 34 2|3) if [ "$RC_UNAME" = Linux ]; then 35 echo "Filesystem repaired, but reboot needed" 36 reboot -f 37 else 38 rescue_shell "Filesystem still have errors; manual fsck required" 39 fi;; 40 4) if [ "$RC_UNAME" = Linux ]; then 41 rescue_shell "Fileystem errors left uncorrected, aborting" 42 else 43 echo "Filesystem repaired, but reboot needed" 44 reboot 45 fi;; 46 8) echo "Operational error"; return 0;; 47 12) echo "fsck interrupted";; 48 *) echo "Filesystem couldn't be fixed";; 49 esac 50 rescue_shell 51 } 52 53 uuidlabel_root() { 54 for cmd in $(cat /proc/cmdline) ; do 55 case $cmd in 56 root=*) 57 type=$(echo $cmd | cut -d= -f2) 58 echo "Mounting rootfs" 59 case $type in 60 LABEL) 61 label=$(echo $cmd | cut -d= -f3) 62 check_filesystem $(findfs LABEL=label) 63 mount -o ro $(findfs LABEL=label) /mnt/root ;; 64 UUID) 65 uuid=$(echo $cmd | cut -d= -f3) 66 check_filesystem $(findfs UUID=uuid) 67 mount -o ro $(findfs UUID=uuid) /mnt/root ;; 68 *) 69 check_filesystem $(echo $cmd | cut -d= -f2) 70 mount -o ro $(echo $cmd | cut -d= -f2) /mnt/root ;; 71 esac ;; 72 esac 73 done 74 } 75 76 # temporarily mount proc and sys 77 mount -t proc none /proc 78 mount -t sysfs none /sys 79 mount -t devtmpfs none /dev 80 81 # disable kernel messages from popping onto the screen 82 echo 0 > /proc/sys/kernel/printk 83 84 # clear the screen 85 clear 86 87 # mounting rootfs on /mnt/root 88 uuidlabel_root || rescue_shell "Error with uuidlabel_root" 89 90 # loading vmwfgx 91 #/sbin/modprobe vmwfgx 92 93 # space separated list of mountpoints that ... 94 #mountpoints="/var /usr /home" 95 #mountpoints="/boot" 96 97 # ... we want to find in /etc/fstab ... 98 #ln -s /mnt/root/etc/fstab /etc/fstab 99 100 # ... to check filesystems and mount our devices. 101 #for m in $mountpoints ; do 102 # check_filesystem $m 103 # 104 # echo "Mounting $m" 105 # # mount the device and ... 106 # mount $m || rescue_shell "Error while mounting $m" 107 # 108 # ... move the tree to its final location 109 # mount --move $m "/mnt/root"$m || rescue_shell "Error while moving $m" 110 #done 111 112 echo "All done. Switching to real root." 113 114 # clean up. The init process will remount proc sys and dev later 115 umount /proc 116 umount /sys 117 umount /dev 118 119 # switch to the real root and execute init 120 exec switch_root /mnt/root /sbin/init ----- This script runs without any complaint and boots gentoo on an x86 virtual machine. However, it won't run complaining "Bad substitute" at the line 53 on the PPC machine. I am now suspecting a problem of busybox itself on PPC. Regards,
I doubt it's architecture related. Please use our forums and/or IRC channels for support, and use this bug tracker to report actual bugs.
