hillman@uservx.afwl.af.mil (05/29/91)
I posted the following question, replies follow: >I bought a Syquest 44Mb for back up and extended storage. I found that if I >leave it off (its the only external on the SCSI) I can't boot off the internal. >Since the switch power in the back of the MAC will power the syquest and the >monitor they are both pluged in there. Most of the time I don't need the >software I have out there so there is not reason to leave it running, but due >to room problems on my desk I would like to leave the cartridge in it. How >should I leave it. > >A. Cartridge all the way in but lever all the way to the right >B. Cartridge all the way in but lever 3/4 the way to the left > ____________________________________________________________________________ From: dana@are.Berkeley.EDU (Dana E. Keil) I think that if you're not using the cartridge and you want to do the most conservative in terms of keeping the cartridge good you really should remove the cartridge and store it in it's plastic case. I say this because dusk is the main enemy of a Syquest cartridge; if you leave it out of it's plastic case even though it's not being used there's just more chance for dusk to get into it. This is especially true if you leave it in the drive because the drive's fan will always be on drawing more dust toward the cartridge. But to answer your real question, I don't think there is any real difference between the two positions of the lever that you asked about. If the button has been pushed, the disk is disengaged; the only thing the lever does is to physically eject the cartridge. -- Dana E. Keil Department of Agricultural and Resource Economics University of California, Berkeley dana@are.berkeley.edu ________________________________________________________________________ From: tjp@ATHENA.MIT.EDU Well, I am no expert, but I have a Syquest drive, and I would suggest: C. The cartridge sticking out about 1/4 inch and the lever 3/4 to the right. This way guarantees that the drive will not boot, that turning power on and off will do no harm, that the read/write heads are retracted safely, and that the cartridge sliding door is closed. It also makes it very easy to remove the cartridge. If you do not have even enough space for this, then you definitely need a bigger work space! As I said, I am no expert, but this is what I have done in the past. - tjp (Thomas J. Piccone) _____________________________________________________________________________ From: Dave Platt <dplatt%ntg.com@RELAY.CS.NET> > > I found that if I leave it off (its the only external on the SCSI) > I can't boot off the internal. This can occur if the SyQuest uses internal termination, and if it's not wired up to be able to accept termination power from the SCSI bus. If you have any Mac more recent than a Plus (with the exception of a Portable, I believe), you may be able to get around this problem by [1] removing the internal termination resistors from the drive's controller board, and [2] connecting a standard external terminator to the drive's second SCSI jack. The external terminator will accept power from the SCSI bus (the Mac provides it... except for the Plus and Portable). You might want to borrow an external terminator from someone and make sure that this works, before you purchase one. -- Dave Platt VOICE: (415) 813-8917 Domain: dplatt@ntg.com UUCP: ...apple!ntg!dplatt
dana@are.berkeley.edu (Dana E. Keil) (06/01/91)
People may think that there was a typo in my message about Syquests summarized here that changed dust -> dusk. But actually I have a really hard time keeping my cartridges awake after sundown. -- Dana E. Keil Department of Agricultural and Resource Economics University of California, Berkeley dana@are.berkeley.edu