I have 2 drives, SSD and HDD.
At the SSD: I have 2 partitions, one with Windows (10 Creators last update), and the other one with System Reserved (500 MB NTFS). At Diskmagement, this System Reserved appears "Healthy (System, Active, Primary Partition)". On mouse right click, doesn't allow me to delete volume. On File Explorer this System Reserved remains invisible. I already understand that I should not mess with this partition.
At the HDD: I have 2 partitions, one with my backups and personal folders, and the other with System Reserved (100 MB NTFS). At Diskmagement, this System Reserved appears "Healthy (Active, Primary Partition)". Mouse right click allows me to delete volume. On File Explorer this System Reserved is visible, and it appears with a letter identification. It is working like any other drive.
Inside I found:
Files: bootmgr (376 kb), bootsec.bak (8 kb).
Folders: RECYCLE.BIN, System Volume Information, Boot. Inside Boot: BCD, BCD.LOG, BCD.LOG1, BCD.LOG2, BOOTSTAT.DAT, memtest.exe
Question: I am not asking about my SSD. I ask just about my HDD (is a removable drive). Is it safe to delete the 100 MB System Reserved partition in my HDD? May I use this 100 MB with other partition at my removable HDD?