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Conference noted::hackers_v1

Title:-={ H A C K E R S }=-
Notice:Write locked - see NOTED::HACKERS
Moderator:DIEHRD::MORRIS
Created:Thu Feb 20 1986
Last Modified:Mon Aug 03 1992
Last Successful Update:Fri Jun 06 1997
Number of topics:680
Total number of notes:5456

228.0. "Write Boot" by KLOV02::BROWN () Wed Apr 02 1986 13:15

    I used to be able to use WRITEBOOT to specify files quite easily
    	for a floppy to boot from, but I dont seem to be able to get
    	it to run any longer. It says FILE NOT FOUND (after asking
    	for the VBN of the code). It seems to do a directory search
    	of SYS$SYSTEM (even though the boot file is on a floppy
    	on another drive) before failing.
    
    Can anyone save me the effort of searching through the microfiche
    	to sort this out ?
    
    Also does anyone know how I can put a vaxeln .SYS file that was
    	generated for a remote load onto a disk (for booting). It looks 
    	like there is something missing. Is it possible to patch it in ? 
    	I dont have access to the source or .OBJ files.
T.RTitleUserPersonal
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228.1booting ELN from floopyDRFIX::RAUHALAKenMon Apr 07 1986 18:0216
If a ELN .SYS file was EBUILD't for remote booting, I don't know details
needed to convert it so it can boot from disk.  However even if you don't
have the source or .OBJ's, but you do have the .EXE files that were used to
build it, you can add
	characteristic/boot_method=disk
in the .DAT file and run it thru EBUILD again to create a disk bootable file.
Oh, you have to give it a node name (number) also.

Then
	$ COPY the_new_file FLOOPY:[SYS0.SYSEXE]SYSBOOT.EXE/CONTIGUOUS
	$ DISMOUNT FLOOPY:
Or use the ELN$:COPYSYS.COM procedure.

Then boot from the floopy and ELN comes up.

At least that's what I do.
228.2Looking for SYS$SYSTEM:BOOTBLOCKCLT::COWANKen Cowan, 381-2198Wed Apr 09 1986 11:3710
    I believe WRITEBOOT is looking for SYS$SYSTEM:BOOTBLOCK.EXE.   It
    searches the specified disk for the file you specify, and puts the
    logical or virtual block number as the first or second longword of 
    block block and copies BOOTBLOCK.EXE to the boot block of the bootable
    disk.
    
    I'm not sure how you were using WRITEBOOT.   Does this help or
    confuse the issue?
    
    	KC