Large-capacity U-disks are getting cheaper and cheaper, and many people are using 8GB and 16GB U-disks. If these large-capacity USB flash drives are used only for data exchange, it will obviously leave a lot of storage space idle. Why not make a part of the space to create a "encryption + start" & double-effect U disk! Tip: Introduction to how the encryption boot U disk works. "Start + Encryption" is a feature selling point of some high-end U disk, but for ordinary U disk, we only need to understand the principle to achieve the "encryption + start" function. Encryption uses some special partitioning software to split the U disk part area into a partition format that Windows cannot access. The boot function is to write the bootable code and maintain the system file on the U disk. Therefore, to achieve a dual-effect U disk, we can use the partition software and maintenance system to achieve. Create a goal: U disk has the function of starting PE system, and the PE system is in the encrypted partition, the user can not destroy the booting system by formatting, deleting, etc. Method 1: Self-built encrypted boot partition using tools: DiskGenius Applicable: Normal U disk By default, Windows can only access one of the U disk partitions, so we only use DiskGenius to divide the U disk into two partitions, and will be the second The partition is set to start the primary partition. Example Interpretation: Making Win7 original PE hidden boot U disk Step 1: Start DiskGenius as administrator, then select the current U disk in the left disk list, click <; partition → delete current partition & rdquo;, follow the prompts to U Disk partition deletion (Note: Be sure to do a data backup operation before deleting the operation). Then click <; partition & rarr; create a new partition & rdquo;, partition type selection & ldquo; extended disk partition & rdquo; (do not directly create the primary partition, otherwise Windows can only display the primary partition), select all the space size, and then click “ OK”. After the creation of the extended disk partition is completed, create two logical partitions in the extended partition as prompted. The size of the two partitions is set according to your actual needs. For example, 8GBU disk, the front partition is set to 6GB (used as a normal data exchange), and the second is 1.5GB (used as a boot partition). Step 2: After the partition is completed, click “Save Changes" and complete the partition formatting operation, then select the 1.5GB partition, right click and select “convert to main partition”, follow the prompt to convert partition 2 to the main partition and activation. Now Windows can only recognize 6GB partitions. Step 3: Right-click on the 1.5GB partition and select “Format Partition”, then in the window that opens, tick “Create DOS System” and click “Format” to create a DOS boot disk. If you want to make a Win7 original PE boot disk, just copy the downloaded PE file to the 1.5GB partition. First use WinRAR to open the prepared Win7.iso file, and extract all the files to the E disk for backup. Then start the command prompt, enter the following command to change the U disk boot record to NT60 format: E:\\boot\\bootsect.exe U: /nt60 /all Step 4: Select the 1.5GB primary partition in the DiskGenius window, switch to “ Browse the file ”, then right-click and select "New Folder" to create the boot and sources folders. Then open the boot folder, right-click and select "Copy files to the current partition", and follow the prompts to copy e:\\boot\\boot.sdi, e:\\boot\\bcd to the directory of the U disk partition \\boot” e:\\sources\\boot.wim to the directory of the U disk partition \\sources”, copy e:\\bootmgr to the root directory of the U disk partition, and the PE boot disk is created. Tip: Since the Windows Explorer cannot access the 1.5GB partition (the formatted U disk will not delete the partition data), this partition has encryption function. You can also save your private file in this encrypted partition by the above method. . If you want to extract the files of the encrypted partition, right-click the file in the above window and select “Copy to Desktop” to save. Step 5: After entering the BIOS, set the USB device to the first boot, and insert the above U disk to boot to the PE system. And this U disk will only display the first partition in Windows, even if it is formatted, it will not destroy the data of the encrypted partition. Method 2: Create a completely hidden boot partition using tools: FbinstTool applies: any U disk, especially the U disk with poor compatibility of the main control chip, the boot disk made by FbinstTool has very good compatibility. Although it is possible to create a dual-effect U disk through DiskGenius, some U disk compatibility is poor, and the boot U disk created by the above method may not be successfully started. For example, “SSK” K1” 8GBU disk (using DM8261 main control chip), the boot U disk that I created using many startup tools can not be used, and finally succeeded by FbinstTool. Interpretation of the example: Making the old peach PE hidden boot U disk Step 1: Since the FbinstTool startup code and maintenance system settings are more complicated, we can first obtain the startup template by means of “One button U disk loading system V3.2”. Insert the USB flash drive and run it as administrator. “One button U disk mount system V3.2”, start mode select USB→ HDD, then click “One button to make USB boot disk” to complete the production (Figure 1) . Tip: If the U disk has used other software partitions (or the capacity displayed on the USB flash drive does not match the actual capacity), you need to use DiskGenius to delete the original partition before the operation. Users who do not have DiskGenius installed can reset the USB flash drive by pressing the following command at the command prompt (the command will delete all data of the USB flash drive): DiskpartSelect disk 1 (assuming only one hard disk and USB flash drive, disk 1 is the USB flash drive disk number) Clean Step 2: After completing the booting of the USB flash drive, start FbinstTool as the administrator. After selecting the USB flash drive in the disk list, you can see the file structure of the “One-click USB flash drive system V3.2” and click ““ Data management & rarr; backup UD to fba file & rdquo;, follow the prompts to backup the current system to fb.fba, placed on the desktop standby. Step 3: Return to the FbinstTool window, click “ Start Settings & Rarr; Format & rdquo;, in the pop-up window, check "Forced Format", "“ UD Extended Partition" (this is the hidden boot partition, the specific size According to your own requirements, assuming 800MB), click on “Format" to create a hidden UD partition (Figure 2). Step 4: Click “Data Management & Rarr; Import fba File” to import the fb.fba file exported above, so that our hidden UD partition capacity becomes 800MB. Now you can add other PE files to the UD partition. . Taking the old peach PE as an example, the prepared old peach PE is renamed minipe.iso. Then expand UD\\PE in the FbinstTool window, right click on the minipe.iso select “delete file”, then right click and select “import file (extended partition)”, import the old peach PE into the UD partition ( image 3). Tip: In fact, through a "U-disk system V3.2", a boot disk can be used to bring its own PE and other maintenance traditions, but the UD partition made by this software is only 110MB, and the capacity cannot be changed. The above "export\\import" operation is actually the capacity of the custom UD partition, and at the same time utilizes the “one-button U disk mount system V3.2”; the generated boot menu is used as a template to add its own PE system to the UD partition. . The same can be done by using the "Import File (Extended Partition)" function to save your private files in the UD partition. Step 5: After completing the above operation, the USB flash drive is created. It uses the UD format encryption partition, and the user can't directly access it through Windows (accessible only by FbinstTool), and the UD partition is displayed as Disk Management. Unallocated & rdquo; space, data is very secure. When using this USB flash drive to boot the system in the future, you can boot to the old peach PE in the multiple boot menu that appears, and you can also use other maintenance systems (Figure 4). This article comes from [website] www.xxx