Knowledge Base Article
Subject: Suspend to Disk Partition
Model: MP978 / MP979 BIOS Ver: n/a
OS: n/a Download File(s): PHDISK.EXE
Created: 03/24/00 Modified: 10/12/2020


When booting the computer a red box is displayed which indicates that the suspend to disk or S2D partition has some trouble.


 The system has a power management mode called suspend to disk (S2D).  When the S2D mode is activated, all processes are stopped, the contents of the memory are written on to a special partition on the hard drive, and the power is switched off.  The system can stay in this state indefinitely.  When the power is switched back on, the memory is filled with the data from this partition and all the processes are restarted to the point where you invoked the S2D mode.

 Note to Windows NT & 2000 Users: S2D is not supported under Windows NT or 2000.  You do not need to create a suspend to disk partition and you can utilize the hard drive space for your files.  To prevent the warning message from appearing, you can disable the power management in the CMOS setup.  Note that Windows 2000 has added a feature called hibernate that does the same function.  Hibernate is enabled through the power setup in control panel.

In order for the S2D to operate properly, you need reserve a dedicated partition on the hard drive.  A utility called PHDISK creates this partition on your hard drive.  This utility MUST be run on a completely empty hard drive (no partitions created).  If there are partitions currently on your hard drive, these must be removed (removing partitions will destroy all data in the partition) before the PHDISK can be run.  To create a S2D partition, you must do the following:

  1. Boot the system into a real mode DOS prompt
  2. Execute the PHDISK Program with "/create /partition" parameters (example: phdisk /create /partition)

Special Notes to users with 10GB and larger Hard Drives:  We have found a few models of 10GB and larger drives where the PHDISK utility must be run AFTER you create your primary partition on the hard drive.