[Coco] coco sdc?

[Robert Gault]

Gene,

I think you are confusing Allen's comment about disk formats with the OS-9 format.

Allen and Gene, the format required on the SD card is FAT16 or FAT32. These are
Windows formats and may or may not be available on a Linux system.

So an alternative, if Linux can't handle FAT32 and a Windows PC is not available,
would be to mail someone a 2GB SD card and have them load the card with a
desired selection of ROM images, directories with disk images, and file contents.

I've looked at my card with a hex editor and it contains:
00000000 EB 58 90 4D 53 44 4F 53 35 2E 30 00 02 10 24 00 .X.MSDOS5.0...$.
00000010 02 00 00 00 00 F8 00 00 3F 00 FF 00 00 20 00 00 ........?.... ..
00000020 00 E0 CD 01 AE 39 00 00 00 00 00 00 02 00 00 00 .....9..........
00000030 01 00 06 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00000040 00 00 29 3D DE EA F4 4E 4F 20 4E 41 4D 45 20 20 ..)=...NO NAME
00000050 20 20 46 41 54 33 32 20 20 20 33 C9 8E D1 BC F4   FAT32   3.....
00000060 7B 8E C1 8E D9 BD 00 7C 88 4E 02 8A 56 40 B4 08 {......|.N..V at ..
00000070 CD 13 73 05 B9 FF FF 8A F1 66 0F B6 C6 40 66 0F ..s......f... at f.
00000080 B6 D1 80 E2 3F F7 E2 86 CD C0 ED 06 41 66 0F B7 ....?.......Af..
00000090 C9 66 F7 E1 66 89 46 F8 83 7E 16 00 75 38 83 7E .f..f.F..~..u8.~
000000A0 2A 00 77 32 66 8B 46 1C 66 83 C0 0C BB 00 80 B9 *.w2f.F.f.......
000000B0 01 00 E8 2B 00 E9 48 03 A0 FA 7D B4 7D 8B F0 AC ...+..H...}.}...
000000C0 84 C0 74 17 3C FF 74 09 B4 0E BB 07 00 CD 10 EB ..t.<.t.........
000000D0 EE A0 FB 7D EB E5 A0 F9 7D EB E0 98 CD 16 CD 19 ...}....}.......
000000E0 66 60 66 3B 46 F8 0F 82 4A 00 66 6A 00 66 50 06 f`f;F...J.fj.fP.
000000F0 53 66 68 10 00 01 00 80 7E 02 00 0F 85 20 00 B4 Sfh.....~.... ..
00000100 41 BB AA 55 8A 56 40 CD 13 0F 82 1C 00 81 FB 55 A..U.V at ........U
00000110 AA 0F 85 14 00 F6 C1 01 0F 84 0D 00 FE 46 02 B4 .............F..
00000120 42 8A 56 40 8B F4 CD 13 B0 F9 66 58 66 58 66 58 B.V at ......fXfXfX
00000130 66 58 EB 2A 66 33 D2 66 0F B7 4E 18 66 F7 F1 FE fX.*f3.f..N.f...
00000140 C2 8A CA 66 8B D0 66 C1 EA 10 F7 76 1A 86 D6 8A ...f..f....v....
00000150 56 40 8A E8 C0 E4 06 0A CC B8 01 02 CD 13 66 61 V at ............fa
00000160 0F 82 54 FF 81 C3 00 02 66 40 49 0F 85 71 FF C3 ..T.....f at I..q..
00000170 4E 54 4C 44 52 20 20 20 20 20 20 00 00 00 00 00 NTLDR      .....
00000180 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00000190 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
000001A0 00 00 00 00 00 00 00 00 00 00 00 00 0D 0A 52 65 ..............Re
000001B0 6D 6F 76 65 20 64 69 73 6B 73 20 6F 72 20 6F 74 move disks or ot
000001C0 68 65 72 20 6D 65 64 69 61 2E FF 0D 0A 44 69 73 her media....Dis
000001D0 6B 20 65 72 72 6F 72 FF 0D 0A 50 72 65 73 73 20 k error...Press
000001E0 61 6E 79 20 6B 65 79 20 74 6F 20 72 65 73 74 61 any key to resta
000001F0 72 74 0D 0A 00 00 00 00 00 AC CB D8 00 00 55 AA rt............U.

The above pertains only to the card format not contents!

Robert

Gene Heskett wrote:
> On Wednesday 29 April 2020 10:49:32 Allen Huffman wrote:
>
>> On Apr 29, 2020, at 8:38 AM, Gene Heskett <gheskett at shentel.net> wrote:
>>> SDC, doesn't work, never has. Very early rev C
><snip>
>
>> Also, the SD card needs to be right. I think I have heard up to 32MB
>
> Its a 2Gig sd card, so nitros9 would use a cluster size of 32 sectors.
> NBD. Theoretically, up to 4GB can be handled by nitros9.
>
>> but it has to be formatted the proper way using an older disk format,
>> and not NTFS.
>
> I can't format any disk, not enough system ram so it crashes. I have
> looked at this sd card with a hex editor and theres only a dos partition
> table, recognized as /dev/sde1 on this machine
>
><snip>