This partition is managed by the operating system, and should not contain any other files, including Windows RE tools.įor Advanced Format 4K Native drives (4-KB-per-sector) drives, the minimum size is 260 MB, due to a limitation of the FAT32 file format. The minimum size of this partition is 100 MB, and must be formatted using the FAT32 file format. This partition is usually stored on the primary hard drive. On GPT drives, this is known as the EFI System Partition, or the ESP. The device must contain a system partition.

Additional drives may use either the GPT or the master boot record (MBR) file format.Ī GPT drive may have up to 128 partitions.Įach partition can have a maximum of 18 exabytes (~18.8 million terabytes) of space. When you deploy Windows to a UEFI-based device, you must format the hard drive that includes the Windows partition by using a GUID partition table (GPT) file system. Is the operating system really on the HDD or is it mirrored somehow on the HDD.If you use a custom partition layout on Windows 10 or Windows 11 for desktop editions (Home, Pro, Enterprise, and Education), update the push-button recovery script so the recovery tools can recreate the custom partition layout when needed. I thought I would be able to tell which of the original operating system items were on the original ssd by unplugging the original ssd and power cords from the motherboard HOWEVER when I turned the computer back on looked at the available disks in DIsk Management, the original EFI and WIndows partions were still visible. Windows (C:) 931.16 (Boot, Crash DUmp, Primary Partition) Secondary (F:) 1743.77 GB NTFS (Page FIle, Primary Partition)Īfter cloning the operating sysem on the new ssd, I also have: Windows RE Tools 980MB NTFS (OEM Partition) Windows (C:) 117.81 GB (Boot, Crash Dump, Primary Partition) - (Changed from C: to H: in new disk configuration)

THe PC came with the following partitions: HOWEVER, I an a little confused about which partitions I can now delete and reformat. I was able to clone the operating sysem to the new ssd and change the boot order so the PC will boot up using the new ssd. I bought and installed a larger ssd for the operating system. My HP ENVY Desktop - 750-247c came with 128GB SSD and a 2TB HDD.

Efi system partition new ssd