* Install the HDCPM ROM in a free ROM slot of your ROM box.
* Plug in your [[SYMBiFACE II]] compatible IDE interface, [[uIDE 16]], [[M4 Board]] or [https://www.cpcwiki.eu/forum/amstrad-cpc-hardware/usifac-iimake-your-pc-or-usb-stick-an-hdd-for-amstrad-access-dsk-and-many-more!/ USIfAC II] and attach the proper mass storage device.
* Power on your Amstrad. You should see the ROM initialization message: ''CP/M+ Hard Disk boot loader v1.04 (S2)''. The type of interface found will be show inside the parentheses:<br />
** (S2): [[SYMBiFACE II]] compatible interface
** (uI): [[uIDE 16]] interface
|[[File:hdcpm-s3.png|thumb|HDCPM ROM - Symbiface III]]
|}
In case a RTC is detected you will also see the RTC initialization message and the current date and time: ''RTC found: 2021/01/01 12:01''
* Use your original CP/M Plus system disk set to Boot CP/M Plus.
* Use the provided HDMGR.COM utility in order to format the disk image or partition and transfer the .EMS file to the reserved track. Change the start-up drive letter to that of your first CP/M hard disk.