AX = 0FF00h: Modify RAM Disk (Drive C:) Size

This function changes the size of the RAM disk (Drive C:).

• Input: AH = 0FF00h
  BX = signed value indicating the number of 8K byte blocks by which the RAM disk is to be shrunk (BX < 0) or grown (BX > 0)

  DL = 1h

• Output: AX = -1h if insufficient memory to grow that much or if flexible sectors are not supported
  AX = 0h if successful
  AX = 1h if RAM disk cannot be shrunk by requested amount, see BX
  BX = Number of 8K byte blocks available for shrinking, if AX = 1h

• Error conditions: As given in AX
• Registers modified: AX, BX, STATUS