Is it safe to delete system partition on disk that used to hold OS in multiple disk desktop PC?

Question

I have a desktop Windows 10, 64 bit, and one of the disks I'm attaching via SATA is from an old laptop, that laptop used to have Windows 10 installed on it. So the system files are still on it.

I see there are 2 extra partitions when i go in device manager, (although I can't delete them...) but I would like to, I'll try with Ease Us or something?

But is it safe to do so? And if ok, what tool should I use to do this, the area is greyed out and can't be formated.

Solution

You may want to back up those partitions first using clonezilla or similar, they will contain the system restore disk images, etc. for whatever hardware they came from.

But yes, delete away. Personally I like to know that disks aren't in use, etc. when playing with partitions, and so I boot a live DVD of Mint or Ubuntu and run sudo gparted

Comments

[JW0914]

Neither of those partitions will contain any kind of restore files, and there's absolutely no reason whatsoever to back them up. The purpose of the 499MB partition is to store the WinRE image, whereas the purpose of the 100MB EFI partition is to house the boot files since the BIOS firmware is UEFI. There is also no reason to utilize any 3rd party software, as Windows supports removing the partitions natively via DiskPart.

[JW0914]

Windows natively supports deleting, and/or formatting, the partitions via diskpart. Once deleted via diskpart, diskmgmt.msc can be utilized to resize the next closest partition.

[Bruno Vincent]

They don't show up in Dispart form command prompt, used Ease Us and they are gone ;)

[JW0914]

@BrunoVincent Please elaborate, as you're not issuing the correct commands then, since it's fundamentally impossible for Disk Management to show drives & partitions not present in DiskPart since Disk Management utilizes DiskPart on the backend. Your comment is also incredulous considering I provided the exact commands required in my answer... You can see what should be shown via my example on PasteBin.