Bác nào chạy Mac OS Lion mà muốn cài thêm Win 7 bằng bootcamp, nhưng muốn cài bằng usb flash driver thì tham khảo hướng dẫn này nhé. Em đã làm và thấy work rồi ạ.
Các bác để ý thấy là khi chạy bootcam assitant đến bước chọn Win7 thì có option là install from USB flashdrive with Win7.iso nhưng không chọn được thì hướng dẫn sau đây giúp các bác chọn được và có thể cài win7 qua usb
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In reference to the radio for Create a Windows 7 Install Disk being unavailable on the Macbook Pro.
Thank you for your input cfxram. After looking up what you did I was able to successfully create a windows 7 install disk on my 2010 macbook pro. For anyone who fumbled with this as I did, here are the exact instructions to fix the problem.
1. Open Applications > Utilities > Boot Camp. Right click Show Package Contents. Click Contents. Double click Info.plist and it should open up as "Info.plist - Locked".
2. Scroll down to the list of strings under <key>DARequiredROMVersions</key>. It should have a list that looks like this:
</array>
<string>IM41.0055.B08</string>
<string>IM42.0071.B03</string>
<string>IM51.0090.B03</string>
<string>IM52.0090.B03</string>
<string>IM61.0093.B01</string>
<string>MP11.005C.B04</string>
<string>MB11.0061.B03</string>
<string>MBP11.0055.B08</string>
<string>MBP12.0061.B03</string>
</array>
3. Copy and paste the last string in the list so that there is a duplicate at the end. A dialogue will come up saying "You don’t have permission to write to the folder that the file “Info.plist” is in.". Click "Duplicate" and it will open up in a seperate file named "Info". Your new file should have a string like this:
<array>
<string>IM41.0055.B08</string>
<string>IM42.0071.B03</string>
<string>IM51.0090.B03</string>
<string>IM52.0090.B03</string>
<string>IM61.0093.B01</string>
<string>MP11.005C.B04</string>
<string>MB11.0061.B03</string>
<string>MBP11.0055.B08</string>
<string>MBP12.0061.B03</string>
<string>MBP12.0061.B03</string>
</array>
4. Open Applications > Utilities > System Information. Under Hardware Overview there will be a Boot ROM Version. Mine was MBP71.0039.B0B. Copy this and paste it into the duplicate string you created at the end. It should look like this:
<array>
<string>IM41.0055.B08</string>
<string>IM42.0071.B03</string>
<string>IM51.0090.B03</string>
<string>IM52.0090.B03</string>
<string>IM61.0093.B01</string>
<string>MP11.005C.B04</string>
<string>MB11.0061.B03</string>
<string>MBP11.0055.B08</string>
<string>MBP12.0061.B03</string>
<string>MBP71.0039.B0B</string>
</array>
5. Scroll down to the list of strings under <key>USBBootSupportedModels</key>. Duplicate the last string the same as Step 3 and you should have something like this:
<array>
<string>IM130</string>
<string>MM50</string>
<string>MP60</string>
<string>MB80</string>
<string>MBP90</string>
<string>MBP90</string>
</array>
6. In System Information, copy the first part of the Boot ROM Version. Mine was MBP71. Paste this into the duplicate string at the end and you will have something like this:
<array>
<string>IM130</string>
<string>MM50</string>
<string>MP60</string>
<string>MB80</string>
<string>MBP90</string>
<string>MBP71</string>
</array>
7. Go to File > Save... and it will bring up a dialogue to save your new file. The default file name will be Info.txt. Change the extension so it reads Info.plist and click Save. A dialogue will come up "You have used the extension “.plist” at the end of the name. The standard extension is “.txt”." Click "Use .plist".
8. Go back into the original Info.plist folder from Step 1 and rename it as Info.plist.old. Drag the new Info.plist file from your desktop into the Contents folder.
9. Open up Boot Camp Assistant when you click through the menus, the radio to Create a Windows 7 Install Disk should be available now. Enjoy!
.Còn muốn cài 2 hệ điều hành trên 1 macbook thì bác có thể dùng Bootcamp như bác xebuyt ở trên đã nói 
