Typing R for retry causes the BIOS to repeat the operation.
Typing I for ignore causes the BIOS to continue as if the problem had not occured.
Typing C for cancel causes the BIOS to abandon the operation. This will often result
in a BDOS error message.
After the user has typed R, I or C the cursor is turned off.
The AMSTRAD BIOS messages are as follows:
Drive <DRIVE>: disc missing
This message is produced when the BIOS attempts to access a drive that does not, or
does not appear to, have a disc inserted.
Failed to load boot sector
This message is produced during a cold boot (invoked by 1 C PM) when the boot
sector is not read correctly or if all the bytes in the boot sector have the same value.
Failed to load CP/M
This message is produced during a warm boot when a sector of the CCP or BDOS is
not read correctly or if all the bytes in the first CCP sector have the same value.
Drive <DRIVE>: disc is write protected
This message is produced when the BIOS attempts to write to a disc that is write-
protected. If the user wishes to write on this disc then the user should remove the disc,
write enable it, re-insert it into the drive and then type R for retry.
Drive <DRIVE>: read fail
This message is produced when a hardware error has been reported whilst reading
from the disc. It may also be caused by trying to read from a disc with the wrong
format, for example: trying to boot from a DATA ONLY format disc.
Drive <DRIVE>: write fail
This message is produced when a hardware error has been reported whilst writing to
the disc.
In the event of a read or write fail the user is recommended to remove and re-insert the
disc then type R This may help in case the disc was badly positioned or may shift any
fluff or what-not adhering to the head. The importance of back-ups cannot be
overstressed.
AMSTRAD Disc Drive & Interface DDI-1 Manual Chapter 5.4
