no
You as a user of the computer can not write information to the ROM. Your computer uses the information placed in the ROM to execute functions. You can only change the information in ROM by installing a firmware update, software supplied by the computers manufacturer.
NO, DVD rom can only read DVD discs.
CD-ROM or DVD-ROM
ROM
HDD is not Read Only Memory. Rather it is a Read-Write memory. So HDD is not the ROM.
No. ROM means read-only memory so, by definition, you can't write to it.
perhaps you mean ROM, but your question is unclear. not all computers have ROM. some ROM is indeed writable (e.g. PROM, UVPROM, EPROM, EEPROM, Flash ROM), but writing is much slower than reading and often requires nonstandard voltages not normally available in the operating computer. early ROM technologies even required physical rewiring of their circuits to change their contents... but it could be changed.
Read Only Memory (ROM) and Random Access Memory (RAM)
This was mainly used to distinguish between different kinds of CDs, the (factory manufactored) read-only CDs, the recordable (write once) CDs and the re-writeable CDs.'Read-Write CD Rom' usually refers to the last kind. Formally it's a misnomer, since ROM (read only memory) would exclude writing, but since CD-ROM was initially the most common kind, many people referred to CDs as CD-ROMs and then added distinguishing modifiers like 'read-write' without realizing the specific meaning of the ROM acronym.(The same applies to read-write CD-ROM drives, named that way to distinguish them from read-only CD drives.)
Rom
ROM bugs cannot be fixed, ROM stands for Read Only Memory. It stores vital information about your computers hardware. All modern computers use a form of ROM called PROM or Programmable ROM, these can be reinstalled or upgraded by any user. Go to your motherboard manufacturer's website and look for BIOS updates.
Read/ write drives allow you to write DVDs. ROMs only read.