English Amiga Board - View Single Post - Need some help with setting up Trifecta 500 LX emu

berke · 23 September 2020, 10:21

I have a Trifecta XL (thus with IDE and SCSI) as well and I was trying to format it on a Linux PC (with FS-UAE and a IDE-USB adapter). It didn't work, even though the PC was detecting the partitions properly. In the end I transferred the Trifecta drivers to the A2000 over a serial link, moved the drive back to the Amiga and ran the ICD tools. I was then able to format and use the drive. When I looked at the drive under a PC, I did indeed notice that:

- The first two sectors (a sector here being 512 bytes) contain some kind of proprietary signature.
- The disk starts at sector 2 (0-based) with the RDSK structure first, as expected, but everything from there is byte-swapped (i.e. bytes at even and odd addresses are exchanged). The "swab" option of the Unix "dd" tool can be used to convert that. I used the following Linux commands to extract the disk:

dd if=/dev/sdX skip=2 conv=swab of=disk.raw

where you have to replace /dev/sdX with the path to your device.

23 September 2020, 10:21	#11
berke Registered User Join Date: Sep 2020 Location: Toulouse, France Posts: 23	I have a Trifecta XL (thus with IDE and SCSI) as well and I was trying to format it on a Linux PC (with FS-UAE and a IDE-USB adapter). It didn't work, even though the PC was detecting the partitions properly. In the end I transferred the Trifecta drivers to the A2000 over a serial link, moved the drive back to the Amiga and ran the ICD tools. I was then able to format and use the drive. When I looked at the drive under a PC, I did indeed notice that: - The first two sectors (a sector here being 512 bytes) contain some kind of proprietary signature. - The disk starts at sector 2 (0-based) with the RDSK structure first, as expected, but everything from there is byte-swapped (i.e. bytes at even and odd addresses are exchanged). The "swab" option of the Unix "dd" tool can be used to convert that. I used the following Linux commands to extract the disk: dd if=/dev/sdX skip=2 conv=swab of=disk.raw where you have to replace /dev/sdX with the path to your device.