修复bootblock

eooyc

初学sun

升级solaris 10 Generic_127111-09   =》 144488-06 失败，然后bootblock损坏，操作系统无法启动
ok boot
Boot device: disk0:a  File and args:
Boot load failed.
The file just loaded does not appear to be executable.


cdrom引导到单用户模式
/usr/sbin/installboot /a/usr/platform/`uname -i`/lib/fs/ufs/bootblk /dev/rdsk/c1t0d0s0
修完以后还是报错
Boot device: disk0:a  File and args:
Boot load failed.
The file just loaded does not appear to be executable.
拆了svm根盘镜像，做了bootadm boot-archive，还是不行

我有三个问题
1）修复bootblock时，是不是是用的光盘OS版本需要和升级前OS版本一致啊？
我看官方文档上说理想情况下要保持一致，不一致会有可能出问题吗？
Ideally, you should match the version of the bootblock that you are going to copy with the Solaris[TM] Version that is installed.
To verify this, Solaris[TM] provides the /etc/release file:
# cat /a/etc/release

This document will tell you the release (Document 1002239.1) is installed and also the release. For instance "Solaris 9 9/04". This should match the version of the DVD you are using.
Now copy the bootblock back to the disk:
# /usr/sbin/installboot /a/usr/platform/`uname -i`/lib/fs/ufs/bootblk /dev/rdsk/c1t0d0s0

2）bootadm update-archive 没有出现
15+0 records in
15+0 records out
只有
# bootadm update-archive -fvR /a
forced update of archive requested
cannot find: /a/etc/cluster/nodeid: No such file or directory
cannot find: /a/etc/mach: No such file or directory
Creating boot_archive for /a
updating /a/platform/sun4u/boot_archive

我看文档上举例都是
# bootadm update-archive -fvR /mnt
forced update of archive requested
cannot find: /mnt/etc/cluster/nodeid: No such file or directory
cannot find: /mnt/etc/mach: No such file or directory
Creating boot_archive for /mnt
updating /mnt/platform/sun4u/boot_archive
15+0 records in
15+0 records out

3）"The file just loaded does not appear to be executable." 一般什么情况下能修好？