Yes, you can. But you have to be careful and make sure that boot files are on another partition.
Yes, formatting a computer hard drive will delete the operating system.
Yes.
Yes, it will.
The best way to completely remove any Operating System is to delete the partition that it is on. Your best bet is to download Knoppix and burn that to a CD, then Boot from the CD and find the partitioning tool and delete the partition that the Operating System is on.
If the drive already contains a partition with an operating system and data that you do not need, you can proceed to delete that partition during the Windows Server 2012 installation process. This will erase all data on that partition, so ensure you have backed up anything important. After deleting the partition, you can create a new one for the Windows Server installation or use the unallocated space directly to install the operating system. Be cautious and confirm that you are deleting the correct partition to avoid data loss.
delete a partition on the system disk (C)
Yes, delete them manually.
Delete all data on a hard drive. Ditto!
If they are on separate hard drives you can generally just delete/format the hard drive with the OS that you do not wish to keep. If they are on separate partitions on the same hard drive you may have to reinstall the bootloader after deleting/formatting the partition.
There is a delete option when you open the Conditional Formatting option. You could also use the Format Painter to paste formatting from a cell with no conditional formatting onto the cell that has.
You can not disable a partition in Windows 98 but you can remove it(everything on the partition will be lost if not saved beforehand on a cdr-rw or another hard drive). Boot up with a windows 98 floppy with th Operating System on it and the the Fdisk.exe file on it. At the "A" prompt, type "fdisk" and press enter. When the fdisk screen pops up, first be sure which partition you want to delete (D,E etc)so you don't delete the partition with your operating system on it (the "C" drive). Once you have determined which partition is to be deleted, follow the onscreen instructions to remove the correct one. When finished, close out the program and reboot the system and the partition should be gone.
First you need to download a partition manager and then install it on your computer. You need to choose the ones that support you delete partition with XP. Do you think so?