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From: ppessi@niksula.hut.fi (Pekka Pessi)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: 2090a and my Syquest SQ555...making it *NOT* autoboot.
Message-ID: <PPESSI.90Sep8001437@spiff.hut.fi>
Date: 7 Sep 90 22:14:37 GMT
References: <9009060603.AA19567@noc.arc.nasa.gov>
Sender: news@santra.uucp (Cnews - USENET news system)
Organization: Helsinki University of Technology, Finland
Lines: 68
In-Reply-To: gutierre@NSIPO.NASA.GOV's message of 6 Sep 90 06:03:40 GMT

>>>>> On 6 Sep 90 06:03:40 GMT, gutierre@NSIPO.NASA.GOV said:
g> I have a 2090a controller and a Syquest 44meg harddisk.  In booting
g> up, the 2090a attempts to read the Syquest after the internal Quantum
g> is read.  After booting up, I get an icon for drive "DH2:", but
g> there's nothing there.

g> I will assume the 2090a sees the Syquest on boot-up, and attempts to
g> find an OFS partition on the Syquest, and assigns an icon for it.

g> In order to disable the autobooting of the Syquest, do I flip a switch
g> on the 2090a, or move the drive to another unit assignment (it's unit
g> 0 now), like 1,2,3,etc...

	Write something into the first two cylinders, where prep
	stores rigid disk block & file system. It is easy with an RESx
	device and RFD-handler. (Any pointers to one are appreciated.)
	I personally use whole disk (except first cylinder) for data.
	Here is my mountlist.device (at the end..): Quantum is device
	0, SyQuest is device 1. (A jumper between 'A' pins, second
	from right. There is PE C B A x jumpers (from left to right)
	if I reckon correctly.)
	
	BTW should 2090A boot from a Quantum P105? I get always the
	WB-hand when I first turn the machine on. Should I connect
	some jumper? Documentation that came with 2092 is next to
	nothing. ;( Besides it is in German. (Ich heisse Deutsch ;)
	(Es ist ein Witze))

/* Quantum P105 */
USR:
    Device = hddisk.device
    Unit   = 3
    FileSystem = l:FastFileSystem
    Flags  = 0
    Surfaces  = 8
    BlocksPerTrack = 32
    Reserved = 2
    Interleave = 1
    LowCyl = 201  ;  HighCyl = 800
    Buffers = 50
    BufMemType = 0
    GlobVec = -1
    Mount = 1
    DosType = 0x444F5301
    StackSize = 4000
#
SyQuest:
    Device = hddisk.device
    FileSystem = l:FastFileSystem
    Unit   = 4
    Flags  = 0
    Surfaces  = 2
    BlocksPerTrack = 34
    Reserved = 2
    Interleave = 0
    LowCyl = 1  ;  HighCyl = 1250 /* koko vitun levy */
    Buffers = 30
    GlobVec = -1
    BufMemType = 0
    Mount = 1
    DosType = 0x444F5301
    StackSize = 4000
#
--
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