How do you disable the hard drive maintanance check in OS3.5?

[tonyvdb]

Since I installed my Cyberstorm PPC and a SCSI drive with OS 3.5. and a fresh install of the Video Toaster Flyer system. My A4000D is now booting off the SCSI drive and the only thing on the on board IDE is the CD rom. My Flyer drives are continuiously doing a "maintance check" it sound like the drives are resetting the heads every 5 seconds when the system is idol.
I have asked around and it seems that it may be that OS 3.5 does a maintanace check causing this. Is there a way to disable this or does anyone know what else may cause this?

[Lemmink]

Never heard of something like that.
Something like a "maintenance check" is usually issued by the drives hardware itself. As SCSI-drives are usually found in servers this is isn`t taht unusual at all. See if there is a Jumper on the drives that might point into that direction.

[tonyvdb]

It only started after I installed the Cyberstorm and the OS on the SCSI drive attached to the Cyberstorm. When I had the system installed on the IDE it did not do this. So its not the Flyer system that is causing this.

[PaSha]

Some harddrives perform thermal realignment of the heads every once in a while (different metals expand differently as they get warmer).

Also, IIRC some SCSI controllers perform some polling (similar to the floppy click) to look for new devices on the bus every now and then, because of the nature of scsi (e.g. you have an external CD-ROM drive hooked up, but switched off. Then you need to use it, and simply switch it on, without any reboots. The SCSI controller finds it during its polls, and you can mount CD0:)

-Paul

[zipper]

PaSha wrote:
Some harddrives perform thermal realignment of the heads every once in a while (different metals expand differently as they get warmer).

One of my IBM U2WSCSI drives is croaking like a frog about once a minute :crazy:

[tonyvdb]

PaSha wrote:
Some harddrives perform thermal realignment of the heads every once in a while (different metals expand differently as they get warmer).
-Paul

Possibly but not in this situation as it has only started doing this since I put in my Cyberstorm and installed OS 3.5 It did not do this before as I have had the same Toaster Flyer system setup for years.

[Tomas]

I dont know anything about any maintance mode as i basicly know nothing about anything newer than os3.1. But do you notice any perfomance issues when this click happens? like maybe the drive(s) stop responding for a moment or something. It could be a hardware issue, like maybe power issues after you added a new device. I know if the platters are not spinning fast enough, something similar could occure.

I have had this happen on a ide disk before.

[amigagr]

i had similars problems once in the a1200 with a hard disk because i supply both hd and the cd from the same connector. all stoped after i connect the cdrom direct to the psu.

[Piru]

No AmigaOS version does any 'maintenance checks'.

[tonyvdb]

The Flyer drives are in a seperate Tower with there own 400w power supply also in this tower is the Two 2 channel TBCs. I have had this setup for 4 years and only once I installed the Cyberstorm and a SCSI drive with OS 3.5 in my A4000D has this problem started. There is no interuption of reading video or recording when the "clocking" or "checking" of the drives (whatever its called) is hapening.

[tonyvdb]

Hey, Thanks for all your help guys. I figured it out. The OS 3.5 thinks the flyer drives are part of the workbench even though they are accessable they are not to be used that way. I got a suggestion from someone on a Toastr flyer forum to move the icons that represent the Flyer drives out of the Dev. folder and into the Workbench startup. and that fixed the problem.