Compaq Evo D300 Troubleshooting Manual page 62

Post Error Messages
Numeric Codes and Text Messages
Code/Message
1801
1998-Master
Boot Record has
been lost.
1999-Master
Boot Record has
changed.
2000-Master
Boot Record
Hard Drive has
changed.
*L = Long, S = Short
A–12
Beeps Probable Cause
None Processor is not
supported by
ROM BIOS.
1L, 2S* The previously saved
copy of the MBR has
been corrupted.
1L* The current MBR
does not match the
previously saved copy
of the MBR.
1L, 2S* The current bootable
hard drive is not the
same as the one that
was present when
MBR Security was
enabled.
Recommended Action
Upgrade BIOS to proper
version.
Run Computer Setup and
save the MBR of the current
bootable disk.
Use extreme caution. The
MBR may have been updated
due to normal disk maintenance
activities (disk manager, fdisk,
or format). Replacing the
previously saved MBR in such
situations can cause data loss.
If you are certain the MBR
change is unintentional and
undesired (e.g. due to a virus),
then run Computer Setup and
restore the previously saved
MBR copy. Otherwise, run
Computer Setup and either
disabled MBR security or
save the MBR of the current
bootable disk.
Run Computer Setup and
either disable MBR security or
save the MBR of the current
bootable disk.
Troubleshooting Guide