res.After.Drives[i*s.setDriveCount+j].State = madmin.DriveStateOk
				tmpNewFormats[i*s.setDriveCount+j] = newFormatSets[i][j]
			}
		}

		// Save new formats `format.json` on unformatted disks.
		for index, format := range tmpNewFormats {
			if storageDisks[index] == nil || format == nil {
				continue
			}