Amiga.org

Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: orange on August 31, 2006, 09:48:35 AM

Title: HDD spinup
Post by: orange on August 31, 2006, 09:48:35 AM

Is there a list of HDD models that can spinup fast enough for KS3.1 to boot? (are Maxtors OK?)

Title: Re: HDD spinup
Post by: CLS2086 on August 31, 2006, 09:50:19 AM

Don't know, but isn't the problem is with KS3.0 with its short boot time ? :-)

Title: Re: HDD spinup
Post by: Amiga4k on September 01, 2006, 03:42:28 AM

Orange,
Which Amiga and 3.1, and what drive type (EIDE or SCSI)?

The A4000D (EIDE) under 3.0 and 3.1 both delays built into the DOS for EIDE drives to spin-up. 3.1 is 30 seconds. 3.0 was just a bit faster. Using a SCSI controller and drive to boot does not negate the 30 second timer. There is NO-EIDE fix (by Matthew Frost) that involves jumping a 4.7K resistor between pin 39 and pin 3, and another 4.7k resistor between pin 39 and pin 5 (the effect is to tie IDE data bits 7 and 6 high). This fix removed the EIDE wait.
What actually happens has been disputed by others, but if you hold the hard drive, you'll sense it "power-up". This is only the drive starting, and coming to full rotation speed. The drive is now ready for access. The delay was programmed into the ROMS to allow slower EIDE drives time to power-up.

The A3000 had it's own hard drive (SCSI) issues. Setbatt addressed those problems, allowing you to configure hard drive time-out and Logical Unit Numbers (LUNs) among other things.

Title: Re: HDD spinup
Post by: orange on September 01, 2006, 06:40:32 PM

its A4000, IDE hard disk.
I have been using some SCSI HDDs on Z3Fastlane card and it somehow seems to me they actually take longer to spinup (than IDE) but Amiga desides to wait for them?

Title: Re: HDD spinup
Post by: pierre on September 01, 2006, 06:41:55 PM

my 3sk has a stock maxtor... very old... very reliable.

Title: Re: HDD spinup
Post by: _ThEcRoW on September 01, 2006, 09:36:01 PM

Isn't putting a jumper on the floppy drive(if not using it), prevent the delay?
Not too long ago i saw it on this same board from a post.

Title: Re: HDD spinup
Post by: Amiga4k on September 02, 2006, 09:49:16 PM

Orange,
The 30 sec timed delay is always present with the EIDE buss. The A4000 ROM's don't care if you have an EIDE drive or not, it's just going to "idle" and wait 30 seconds. The only way to defeat it is to install an EIDE cable  with the resistors as described in my previous message. --- Then, you go with the SCSI drives, and presto -- no delay.

Title: Re: HDD spinup
Post by: orange on September 04, 2006, 07:18:35 AM

I don't care about delay being too long. I want to switch to IDE only system and avoid having to manually reset on every cold boot.