Win8 is uninstalled from dual system as follows:
1. Virtual machine test created by Hyper-V platform, divided into three partitions in 127GB hard disk (one 100MB partition is the system itself) Create), the size is 50GB, 50GB, 27GB, of which Windows 7 system is installed in the first primary partition (ie the red box below).
2, another Windows 8 selects the second primary partition during the installation process (ie the red box below).
3, normal boot, in the boot system selection interface, select “ Windows 7 & rdquo; system.
4. After entering the system desktop normally, use the “Win+R” hotkey to call up the running dialog box, type “msconfig”, and click ““OK” button or enter.
5. In the pop-up system configuration interface, click the “Boot” tab, click ““Windows 8 (D:Windows) default OS” in the list, make it selected, and then click &ldquo ; delete the & rdquo; button, and finally click the “ OK & rdquo; button.
6, the system will prompt to restart to apply the changes, to ensure that all current work content has been saved, click the "restart (R)” button.
7. When the system is restarted, it will not prompt any system selection information. Instead, it will directly boot Windows 7 as in the normal single system, and the F8 hotkey can still be used to bring up the advanced startup menu during the boot process. However, you need to enter the system and delete some files and directories of the D drive (the original Windows 8 system disk). After entering the system desktop normally, open the computer or explorer and double-click the D drive.
8, in the root directory of the D drive, use the left mouse button with the Ctrl hotkey to select Perflogs, Program Files, Program Files (X86), ProgramData (the default is hidden attributes, do not delete does not affect, the size is only For five or six megabytes), Windows, users, a total of six folders (do not delete any folders other than this, to avoid data loss). After selecting it, right click on the folder and select the “Delete(D)” button in the popup menu.
9. The system will remind you whether to confirm the deletion of multiple items. After confirming the correctness, click the “(Y)” button.
10, the system will automatically remove the relevant items to the recycle bin. If the confirmation data has no effect, you can clear the service station. If the data has an impact, you can restore it according to the actual situation.
11. If the system prompts that the folder access is denied, you can check the operation for all current items (A) & rdquo; and then click the "Skip(S)” button.
12. If you need to delete the directory with administrator rights, you can right click on the directory and select the “Properties” button.
13. In the pop-up properties dialog box, click the “Advanced (V)” button under the "Security" tab.
14. In the advanced security settings dialog box that pops up, click the “Edit (E)…” button under the “Owners” tab.
15, in the owner change list click “ Windows7 (Windows7-PCWindows7 & rdquo; (Note: actually need to select the current administrator account, and the Windows7 account in the figure below is the administrator), and then check “ Replace the owner of the child container and object (R) & rdquo;, and finally click the "OK" button.
16, the system will prompt information, click the "Y" & rdquo; button
17. Continue to click on the “OK” button (Note: The processing time after the operation depends on the number of files).
18, then click on the “Permissions” tab. "Change permissions (C) & hellip; & rdquo; button.
19, in the pop-up advanced security settings interface, respectively, check "Include permissions (I) can inherit from the object's parent" ; and “ replace all child object permissions (P) & rdquo; with permissions that can be inherited from this object, and then click the "OK" button.
20, then according to the information dialog box prompted by the system, click &ldquo ; Yes (Y) & rdquo; button (Note: processing time after operation depends on the number of files).
21, after changing the permissions, directly click the "OK" button.
22, at this time you can see that the administrator rights have been deleted and modified, click the "OK" button You can delete the folder in the normal way.
23, other folders can also be operated in this way, the key point is to change the owner, replace the sub-container, change the permissions.