@Curtis....

Since I'm still trying to come up with a reliable solution for an OS3.9 HDD, I'm very interested in your outcome.

What SCSI adapter are you using?
Have you tested the speed thru the SCSI to IDE bridge? It would be good to know this.

Which SCSI to IDE bridge did you install, AmigaKit, ACard, other, manufacturer?

Did you get the SCSI2SD V6.0 board? There's a guy on EAB that measured 1.85 MB/sec using an A2091. After he applied the 14MHz hack to the A2091 he now gets 2.4 MB/sec consistently. Not too shabby.
BTW, did you use the new GUI to configure your SCSI2SD?

Here's the kicker.... will both of these HDD adapters be recognizable from the Emergency Repair Disk (ERD) floppy? That's the big MUST, unless you're using some magical backup solution that you can restore a bootable backup to your SYS partition, in my case anyway.

Let us know how you get on please.

How much speed am I losing by having the CF adapter running through the bridge as opposed to the SCSI2SD?

Try to measure the speed you have right now. I get 1.2MB/sec on the SCSI2SD v5, and 2.4MB/sec for the SCSI2SD v6, both connected to the 2060 on-board SCSI.

For the v6, unfortunately synchronous SCSI does not work, so the "fastest possible" speed option does not provide a stable system. The v5 was always rock-stable.

Get an ACARD 7720 (or a 7722 if you know how to desolder and reflash the ROM) and use a small IDE DOM with it. Its an awesome combo.

Here is my setup, NOTE!! I desoldered the IDE header from the other side of the board and relocated to the front and switch to pins from a socket so I could use this DOM on the header directly. The 7722 is also reflashed with the ROM from a 7720 so I can use it with hard drives and not only CD/DVD-ROM like the 7722 is locked for, and is why the 7722 is a lot cheaper.

I have CF and SD in Mechy SCSI card readers on both my A500 and A2000.  Haven't run any speed tests in a while but from what I recall the CF was faster than the SD.  This is about the most direct "apples to apples" comparison one would be able to do.  Although there's so many variables involved in this question - the make and performance characteristics of the card, they type of interface used, I imagine the file system would affect performance, how many adapters are required between the devices...  Good luck! :lol:

This thread reminds me that I've still got a 2091 sitting on my shelf, halfway done with the 14MHz hack.  Maybe one of these years I'll get around to finishing it!  :rofl:

I have CF and SD in Mechy SCSI card readers on both my A500 and A2000.  Haven't run any speed tests in a while but from what I recall the CF was faster than the SD.  This is about the most direct "apples to apples" comparison one would be able to do.  Although there's so many variables involved in this question - the make and performance characteristics of the card, they type of interface used, I imagine the file system would affect performance, how many adapters are required between the devices...  Good luck! :lol:

This thread reminds me that I've still got a 2091 sitting on my shelf, halfway done with the 14MHz hack.  Maybe one of these years I'll get around to finishing it!  :rofl:

I love my Mechy readers, but I was never able to get SD working in them,  I was able to get lun 0 with CF in pcmcia adapter to work and lun 1 CF in CF slot too work.

Get an ACARD 7720 (or a 7722 if you know how to desolder and reflash the ROM) and use a small IDE DOM with it. Its an awesome combo.

Here is my setup, NOTE!! I desoldered the IDE header from the other side of the board and relocated to the front and switch to pins from a socket so I could use this DOM on the header directly. The 7722 is also reflashed with the ROM from a 7720 so I can use it with hard drives and not only CD/DVD-ROM like the 7722 is locked for, and is why the 7722 is a lot cheaper.

@Acill  I was looking at these on ebay.  You post clears things up...  
So how do you do the flash from 7722 to 7720?  The Block of six pins in the upper right corner?

Schnykies! I keep forgetting I have a Mech SCSI reader in my A590! I need to move this to my A2000! :lol: Hey Mike, can I PM you later to get how you created the mount lists for this? Do all the card slots show up with an ERD when they have cards in them? Is the Mech reader the only HDD device in your A2K? This would be perfect for OS and SYS B/U if they do.

Hey buddy!  I can't think of any reason why they wouldn't.  As long as your controller supports LUN's and you have HDToolbox properly configured (use the tooltype to show all devices) and the correct file system installed (for example, I have my SD card formatted as FAT32 for transferring files to other devices.  I don't think the ERD would recognize it unless I had the FAT95 file system installed on it).  With those caveats aside, I would think an ERD would be able to show all the cards just fine.  

I just went to test it on my A2000 but noticed I have my ERD here at the office but my OS 3.9 CD at home.  Then when I tried to cancel the requester asking for the CD I noticed my mouse wouldn't move.  Looks like my (*@%&$#?@!%&$#?@!%&$#?@!$( coworker bumped my Cocolino with his chair and broke off the connector.  Also my A500 at home needs work - got a Guru-ROM for the GVP controller months ago but now the case doesn't close (because the combined height of the card reader + the Guru-ROM adapter is too high).  Been thinking to replace the card reader with one of those AmigaKit SCSI2SD's... but now I see they're out of stock....  Aaah!  Whine, whine, complain.  Both of my Amiga's need work and I'm too busy helping my girlfriend move and remodeling my bathroom at home to do anything about it.

Also, my PM box is like 99% full again.  :laughing: