Re: CMD HD mechanism failure?

From: Justin Cordesman <shadow_at_darksideresearch.com>
Date: Sat, 30 Jan 2021 14:59:44 -0800
Two things:

1. Try turning the drive upside down if you need to recover anything from it. Sometimes if they are having trouble getting to target speed switching the load to the top bearing gets you there.

2. https://store.inertialcomputing.com/SCSI2SD-s/100.htm


I use one on my Powermac 9600 since it sits on the edge with the last support for the 400k floppies but has modern Ethernet support. There are newer ones since mine with higher performance. Use good media, genuine sandisk extreme or the like (there are a LOT of forgeries of SD and microSD media so shop carefully). Write endurance and I/O performance, especially random writes, is very different as you go up the quality scale.

Justin

On Jan 30, 2021, at 14:58, Terry Raymond <traymond160_at_gmail.com> wrote:


Hi all,
Does anybody know much about the CMD HD?

It seems my Hawk Seagate 2 gig mechanism crashed, this mechanism had always run fairly quiet but within this year it has gradually been running louder, until just last week it will not longer bootup.
The top green Activity light comes on and blinks for an eternity then goes out
then the Red Error light flashes.
I have my CMD HD device number set at 8
I have my UIEC2CF set right now at 9
I used Jiffy-Dos to cycle to Device 8 but on the monitor it didnt show 8 it 
displayed 30  but the CMD HD doesnt complete its boot, I cannot access
anything on it, not even pulling up a directory.  :(  Yes the mechanism spins up but thats it, just errors, nothing.

I have one other Hawk Seagate but its the type that has jumpers on the side of the mechanisms controller board they are labeled as:

TE DS ME WP PE SS TP TP
Do any of these jumpers need to be jumpered?  If so could someone provide me with a good physical layout of how the jumpers are placed, please. I would rather have a graphical layout  and ascii diagram wont do.

So if this mech wont work I have heard that there is some kind of 
SD remake for SCSI, would this possibly work in the CMD HD?
If so no more noisy mechanical mechanisms to listen to that would be
really nice, the CMD HD only recognizes up to 4 gig, I think its something to do with the boot Rom only supports up to 4 gig.

Thank you,

Terry Raymond


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<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">Two things:<div><br></div><div>1. Try turning the drive upside down if you need to recover anything from it. Sometimes if they are having trouble getting to target speed switching the load to the top bearing gets you there.</div><div><br></div><div>2.&nbsp;<a href="https://store.inertialcomputing.com/SCSI2SD-s/100.htm">https://store.inertialcomputing.com/SCSI2SD-s/100.htm</a></div><div><br></div><div>I use one on my Powermac 9600 since it sits on the edge with the last support for the 400k floppies but has modern Ethernet support. There are newer ones since mine with higher performance. Use good media, genuine sandisk extreme or the like (there are a LOT of forgeries of SD and microSD media so shop carefully). Write endurance and I/O performance, especially random writes, is very different as you go up the quality scale.<br><br><div dir="ltr">Justin</div><div dir="ltr"><br><blockquote type="cite">On Jan 30, 2021, at 14:58, Terry Raymond &lt;traymond160_at_gmail.com&gt; wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr"><div dir="ltr">Hi all,<div>Does anybody know much about the CMD HD?</div><div><br></div><div>It seems my Hawk Seagate 2 gig mechanism crashed, this mechanism had always run fairly quiet but within this year it has gradually been running louder, until just last week it will not longer bootup.</div><div>The top green Activity light comes on and blinks for an eternity then goes out</div><div>then the Red Error light flashes.</div><div>I have my CMD HD device number set at 8</div><div>I have my UIEC2CF set right now at 9</div><div>I used Jiffy-Dos to cycle to Device 8 but on the monitor it didnt show 8 it&nbsp;</div><div>displayed 30&nbsp; but the CMD HD doesnt complete its boot, I cannot access<br></div><div>anything on it, not even pulling up a directory.&nbsp; :(&nbsp; Yes the mechanism spins up but thats it, just errors, nothing.</div><div><br></div><div>I have one other Hawk Seagate but its the type that has jumpers on the side of the mechanisms controller board they are labeled as:</div><div><br></div><div>TE DS ME WP PE SS TP TP</div><div>Do any of these jumpers need to be jumpered?&nbsp; If so could someone provide me with a good physical layout of how the jumpers are placed, please. I would rather have a graphical layout&nbsp; and ascii diagram wont do.</div><div><br></div><div>So if this mech wont work I have heard that there is some kind of&nbsp;</div><div>SD remake for SCSI, would this possibly work in the CMD HD?</div><div>If so no more noisy mechanical mechanisms to listen to that would be</div><div>really nice, the CMD HD only recognizes up to 4 gig, I think its something to do with the boot Rom only supports up to 4 gig.</div><div><br></div><div>Thank you,</div><div><br></div><div>Terry Raymond</div><div><br></div></div>
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Received on 2021-01-31 01:00:03

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