3Com e-PC c10/s10, User Manual, Page: 67 / 122

C C h h a a p p t t e e r r 6 6 5 5 5 5
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If you are using MSDOS 6.2 or higher you must use the “/TESTMEM:OFF” option with
HIMEM.SYS to disable the extended memory RAM test. The resulting command line is:
device=himem.sys /TESTMEM:OFF
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When things do not work, the best way to diagnose problems is to interpret MBA's PC screen
using MBA's verbose mode. See “
Displaying Verbose Status Information ” in Chapter 4. Refer
to the following section for explanations of MBA screen messages.
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BOOTP
DHCP
If the PC has stopped at this prompt and the progress dots (….) are increasing, it means that
no reply has been received from the BOOTP or DHCP service on the server, and you should
check the following:
A proper connection to the file server. Try to connect to the server if you boot from a
floppy or hard drive.
(BOOTP case only) Your server is running a BOOTP service. You may want to try
running the service in stand-alone mode to see if it is getting the request from the PC.
The service should also have a debug mode where it displays information on the
screen for each request it gets and replies to.
Transferring boot image file (x-y) (only in verbose mode)
The two numbers in the brackets, x and y, indicate retries and packet number respectively.
During a normal transfer the first number, the retries, should remain at 1 and the second
number, the packet number, should increase.
If the retry count is increasing but the packet number is not, it indicates the PC is not
receiving any packets from the TFTP service. If the packet number remains at 1 make sure
your server is running TFTP.
If both the retry count and the packet number are increasing it indicates the transfer is
progressing correctly, but the PC is not receiving packets as quickly as it can process them.
This normally indicates a busy network.
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Most file transfer errors originate at the server. Some common file transfer errors are:
File transfer error:
If you see “File transfer error” with no description, it indicates the PC received an error
packet, but the sending server did not indicate what the error was.