xp, vista, win7 共舞 multi-boot

最近真的是離不開 M$ OS, 甚至一台電腦要裝九個作業系統，當然啦，是資源不足才需要這樣。問題來了，開機選單在 winxp 還可以透過界面修改，可是 vista, win7 全都不開放！現在研究後的心得如下，請在 vista or win7 下執行:

一、首先在 Command Prompt, 也就是 DOS command, 上用右鍵選「Run as Administrator」，這樣才有足夠的權限，若找不到的話請參考:
Start Menu->All Programs->Accessories->Command prompt(在上面點右鍵選擇"Run as administrator")

二、可以用 bcdedit /enum 列出所有開機選單，例如下面的是我的電腦的範例, # 號後面的是我加的註解:

Windows Boot Manager
--------------------
identifier              {bootmgr}
device                  partition=D:
description             Windows Boot Manager
locale                  en-US
inherit                 {globalsettings}
default                 {current}
resumeobject            {42231781-52f5-11de-92a1-f650bd7a3f2b}
displayorder            {ntldr}
                        {current}
                        {42231782-52f5-11de-92a1-f650bd7a3f2b}
                        {4223177e-52f5-11de-92a1-f650bd7a3f2b}
                        {b1252275-52ef-11de-ac3a-e7ceed221dbd}
toolsdisplayorder       {memdiag}
timeout                 30

Windows Legacy OS Loader
------------------------
identifier              {ntldr}
device                  partition=D:
path                    \ntldr
description             舊版 Windows

# 可以用下列命令改掉
# bcdedit /set {ntldr} Description "XP 32/64"

Windows Boot Loader
-------------------
identifier              {current}
device                  partition=C:
path                    \Windows\system32\winload.exe
description             Microsoft Windows Vista
locale                  en-US
inherit                 {bootloadersettings}
osdevice                partition=C:
systemroot              \Windows
resumeobject            {adc6e5dc-5450-11de-b61c-8253c0de8538}
nx                      OptIn
# 可以用下列命令將原來的"Microsoft Windows Vista" 改掉
# bcdedit /set {current} Description "Vista 32 en Enterprise"

Windows Boot Loader
-------------------
identifier              {42231782-52f5-11de-92a1-f650bd7a3f2b}
device                  partition=I:
path                    \Windows\system32\winload.exe
description             Windows 7
locale                  zh-TW
inherit                 {bootloadersettings}
recoverysequence        {42231783-52f5-11de-92a1-f650bd7a3f2b}
recoveryenabled         Yes
osdevice                partition=I:
systemroot              \Windows
resumeobject            {42231781-52f5-11de-92a1-f650bd7a3f2b}
nx                      OptIn
# 可以用下列命令將原來的 "Windows 7" 改掉
# bcdedit /set {42231782-52f5-11de-92a1-f650bd7a3f2b} Description "Win7 64 Ultimate"

Windows Boot Loader
-------------------
identifier              {4223177e-52f5-11de-92a1-f650bd7a3f2b}
device                  partition=H:
path                    \Windows\system32\winload.exe
description             Windows 7
locale                  en-US
inherit                 {bootloadersettings}
recoverysequence        {4223177f-52f5-11de-92a1-f650bd7a3f2b}
recoveryenabled         Yes
osdevice                partition=H:
systemroot              \Windows
resumeobject            {4223177d-52f5-11de-92a1-f650bd7a3f2b}
nx                      OptIn
# 可以用下列命令將原來的 "Windows 7" 改掉
# bcdedit /set {4223177e-52f5-11de-92a1-f650bd7a3f2b} Description "Win7 32 Ultimate"

Windows Boot Loader
-------------------
identifier              {b1252275-52ef-11de-ac3a-e7ceed221dbd}
device                  partition=E:
path                    \Windows\system32\winload.exe
description             Microsoft Windows Vista
locale                  en-US
inherit                 {bootloadersettings}
osdevice                partition=E:
systemroot              \Windows
resumeobject            {b1252276-52ef-11de-ac3a-e7ceed221dbd}
nx                      OptIn
# 可以用下列命令將原來的 "Microsoft Windows Vista" 改掉
# bcdedit /set {b1252275-52ef-11de-ac3a-e7ceed221dbd} Description "Vista 64 Enterprise"

三、在上文提到的 {current} 還有 {default} 等選擇文字，其實就在 /enum 列出的 "identifier" 欄位裡面

四、 用 bcdedit /? 取得進一步資訊