


The reason that you cannot delete an EFI partition on a Windows 10, 8, 7 or Vista based computer, is because the EFI partition is protected from deletion by the OS. But in some cases, it's impossible to delete a specific partition, like an EFI partition, by using the Disk Management tool, because the "Delete Volume" option is grayed out. The only hardware changed has bee the HDD.Disk Management tool is the most common way to delete partitions on a Windows OS. I have not touched the BIOS since taking ownership of the PC as new a little over 2 years ago - is it possible for it to change itself? I disconnected the drive and booted normally, came online and wrote this. I shut it down and changed the SATA port it was connected to on the motherboard and tried again - same result.

I did copy some files across with no problems and all seemed fine. Perhaps I should have re-booted after the format but I didn`t. The options were not greyed out at this point. I formatted the new drive fully - all appeared well. I fitted a brand new drive, the PC booted normally and the drive was not recognised in `My Computer.

BUT, if I have a second drive fitted I have a boot problem in as much as the PC wont boot but just sits with a lot of drive activity after the `loading` screen and before the `Welcome` screen. Using Acronis TI I cloned my primary drive to the suspect drive - it boots and runs OK. No I haven`t tried MaxBlast but doesn`t the new SeaTools do the same job? Sorry I have no idea how to post a screenshot of Disk Management.
