But if you want to boot from the GPT disk successfully, UEFI mode should be supported and enabled. In case an error may occur after the conversion, you can create a Mini. Tool bootable media in advance which can help you convert GPT disk back to MBR as a remedy. Step. 1. After installing Mini. Tool Partition Wizard, run it to get the main interface. Then select the system disk and choose Convert MBR Disk to GPT Disk from the action panel. Step 2. You will receive a warning message saying that to boot from the GPT disk, please enable UEFI Boot Mode from BIOS after you apply the change, press OK to confirm. Step 3. Now hit the Apply button on the menu bar to start the conversion and wait patiently until it finishes. Thats all Now you should enable UEFI boot mode in BIOS before you restart the PC you dont need to do this if it is a data drive converted. Then check if you still cannot create new partition on unallocated space in Windows 1. You may also like Two Solutions to Create New Partition Grayed out Issue in Windows XPCase 2. New Simple Volume Greyed out on Removable Disk. Here is a thread telling the real story Q I have connected my memory card and the card is partitioned into two disks 5. MB Primary and 7. GB Unallocated. Now I am unable to use that unallocated space of the card as the option New Simple Volume is disabled grey colored Please help from Tomshardware. On removable disks such as USB drives or SD cards, if you intend to create a second partition so as to increase internal storage of Android or for some other intentions, you will definitely fail if you rely on Disk Management. This is because Windows will not let you repartition removable storage devices, hence the feature New Simple Volume greyed out for USB removable drives. Do you still have a way to turn second unallocated partition into a simple volume Here a nice tool is offered to overcome this limit use Mini. Tool Partition Wizard Free to create second partition on removable disk. Although for removable disks, there is no option to create a new partition in Disk Management Mini. Tool Partition Wizard provides such a chance to create a second volume. With this software, you can finish this job within just a few clicks. Download this free partition magic and install it on computer. League Of War Hack Cheat Download. Step 1. Select the unallocated space on removable disk and choose Create Partition from the action panel. Step 2. Mini. Tool Partition Wizard will tell you that only the first partition can be recognized by Windows. It does not matter. To continue, click OK. Step 3. A new window appears where you can specify the Partition Label, Partition Type, Drive Letter, File System, Cluster Size, and Partition Size. After doing these, click OK. Step 4. Finally, click Apply button. Thats it You see, with Mini. Tool Partition Wizard, all things are easyTip if you want to delete the existing partition on SD card to create a full sized one, you will find the Delete Volume feature is also disabled in Disk Management. In this case, you can rely on Mini. Tool Partition Wizard Free to do the deletion and recreation. For more information, read Why Cant Delete Volume on USB Flash Drive and How to Fix the Issue. Further Reading New Simple Volume Failed to Create New Partition. Sometimes, you may wonder, the New Simple Volume feature is available, but the creating process still fails. Why Generally speaking, you will encounter this issue if either of the two situations is true. And we give you the solution as well. Situation 1. On an MBR disk, there are already four primary partitions. If there are already four primary partitions on an MBR disk, you will receive the following message while trying to create a new partition on the unallocated space. Three suggestions for you a In Disk Management first of all, delete a primary partition that is adjacent to the unallocated space to get a big unallocated space. Then create a new partition on the unallocated space. Windows will make it logical. Finally, if you want to divide that logical partition into two parts, use Shrink Volume to help you allocate some free space from the logical partition so as to create another logical partition.