Amiga 1200 Lost Partition

[Toastrman]

I bought a gorgeous A1200 recently with 3.1 ROMs, a 4.5 Gig SCSI HD, and Sys 4 AGA. Looks brand new. I installed a GVP '030/50 w/16 Mb of RAM. The previous owner installed the Mitsubishi HD. I thought A1200's came with IDE 540 Mb drives. Anyhow, everything was working great until I tried to install an upgrade to OS 3.5. It deleted some files and wrecked everything! The machine wouldn't even reboot to finish the upgrade. I just installed the same OS 3.5 in my old A2000 with no problems. I finally got the computer to boot up by hooking up an autobooting SCSI drive throught the GVP SCSI port (thank god for that) and reinstalled OS 3.1. But only 3 of the 4 partitions are recognized. A look through the HD toolbox shows all 4 partitions are still there and including the one checked to autoboot which is now working. I'm missing a 2 Gig partition on the workbench even though it's still there on the drive. Has anyone ever heard of that? How do I restore control of the missing partition? Also, why does T-Zero want more than 2 Mb of chip RAM? It doesn't exist as far as I know. This is an Amiga Tech A1200.

[klapdeur]

you'll need to update os 3.1 to 3.5 or 3.9 to get the partitions reqonized.

t-zero needs the full 2mb chipmem the A1200 has the only way to get that is to boot without startup-sequence, run setpatch from cli (setpatch NOROMUPDATES QUIET) otherwise machine reboots again.

mount your cd0:

for example in cli  run idefix
mount cd0:
then you can start t-zero
or run loadwb
and then play it.

maybe theres a patch for it i dont know. such as a RADboot like napalm also have and capital punishment

hope this helps.

[scuzzb494]

A1200s came with either no hd or a variety of sizes depending on what you wanted. My first A1200 came with an 80MB hard drive. I have three hard drives on my 1200, an internal 550MB and two external 2.1GB SCSI. I did try once putting a 1GB internal IDE 3.5" but struggled with power. I then reduced the capacity and fitted external 2.1GB drives given that anything above 4GB would have to be partitioned to sacrifice that last part of the drive given the issues with Workbench 3.0. There is plenty written on the forum about partitioning hard drives for the 1200.

PS Its all a bit hit and miss and you can work the hd to work. I guess 3.5 just mucked that up and the HD is now not fooling the 1200. That power supply is a problem though and many of the original 1200s could not power bigger drives, particularly when supporting other devices. That is why I fitted an SCSI Kit to my 1200 and powered drives from external boxes.

[Thomas]

@Toastrman:

Please run http://aminet.net/package/disk/misc/check4gb and attach the report here. With the information I can help you to get the partition back.