[DEBUG] FORMAT 0.92a, selected drive B:
[DEBUG] Sector buffer at 18D7:BD3C, track buffer at 18D7:913C
[DEBUG] Skipped ASSIGN check for diskette drive.
[DEBUG] DOS 7+, LOCKing drive
Insert new diskette for drive B:
[DEBUG] DOS 7+, FORMAT-LOCKing drive
[DEBUG] Current Disk Drive Parameter Table Values at 0070:0119:
[DEBUG] [DDPT] Step Rate: 240 msec Head Unload: 48 msec DMA Flag
Bit: 0
[DEBUG] [DDPT] Head Load: 4 msec Post Rotate: 2035 msec Sector
Size: 512
[DEBUG] [DDPT] SECTORS PER TRACK: 21 (Gap: 27 Data: 255 Format
Gap: 84)
[DEBUG] [DDPT] Fill Char: 0xF6 Head Settle: 15 msec Motor Start: 1000
msec
Formatting to 1494k (Cyl=83 Head=2 Sec=18)
OVERFORMAT: 1494k in 1200k drive. Good luck!
[DEBUG] Selecting int 13h ah=17h size class: 3
No gap length known for 18 sec/cyl. Good luck with BIOS value!
TWEAK: Sectors per cylinder in DDPT set to 18
[DEBUG] Interleave Map:
1 7 13 2 8 14 3 9 15 4 10 16 5 11 17 6 12 18
[DEBUG] Configured Disk Drive Parameter Table Values at 0070:0119:
[DEBUG] [DDPT] Step Rate: 240 msec Head Unload: 48 msec DMA Flag
Bit: 0
[DEBUG] [DDPT] Head Load: 4 msec Post Rotate: 2035 msec Sector
Size: 512
[DEBUG] [DDPT] SECTORS PER TRACK: 18 (Gap: 27 Data: 255 Format
Gap: 84)
[DEBUG] [DDPT] Fill Char: 0xF6 Head Settle: 15 msec Motor Start: 1000
msec
[DEBUG] Controller setup 15: [configured type 5] 500 kbps (HD 1xx0k)
POPI2024
Full Formatting (wiping all data)
[DEBUG] Formatting: Cylinder: 0 Head: 0 Sectors: 18
[DEBUG] Intr 0x13.2 verify error: 4. Checking...
Format failed, error in first 7 sectors!
Format error in track 0, giving up.
[DEBUG] DOS 7+, UNLOCKing drive (by one level)
[DEBUG] DOS 7+, UNLOCKing drive (by one level)
[DEBUG] FORMAT 0.92a, selected drive B:
[DEBUG] Sector buffer at 18D7:BD3C, track buffer at 18D7:913C
[DEBUG] Skipped ASSIGN check for diskette drive.
[DEBUG] DOS 7+, LOCKing drive
Insert new diskette for drive B:
[DEBUG] DOS 7+, FORMAT-LOCKing drive
[DEBUG] Current Disk Drive Parameter Table Values at 0070:0119:
[DEBUG] [DDPT] Step Rate: 240 msec Head Unload: 48 msec DMA Flag
Bit: 0
[DEBUG] [DDPT] Head Load: 4 msec Post Rotate: 2035 msec Sector
Size: 512
[DEBUG] [DDPT] SECTORS PER TRACK: 18 (Gap: 27 Data: 255 Format
Gap: 84)
[DEBUG] [DDPT] Fill Char: 0xF6 Head Settle: 15 msec Motor Start: 1000
msec
Using drive default: 1200k (Cyl=80 Head=2 Sec=15)
[DEBUG] Selecting int 13h ah=17h size class: 3
[DEBUG] Interleave Map:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
[DEBUG] Configured Disk Drive Parameter Table Values at 0070:0119:
[DEBUG] [DDPT] Step Rate: 240 msec Head Unload: 48 msec DMA Flag
Bit: 0
[DEBUG] [DDPT] Head Load: 4 msec Post Rotate: 2035 msec Sector
Size: 512
[DEBUG] [DDPT] SECTORS PER TRACK: 15 (Gap: 27 Data: 255 Format
Gap: 84)
[DEBUG] [DDPT] Fill Char: 0xF6 Head Settle: 15 msec Motor Start: 1000
msec
[DEBUG] Controller setup 15: [configured type 5] 500 kbps (HD 1xx0k)
POI
Full Formatting (wiping all data)
[DEBUG] Formatting: Cylinder: 0 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 0 Head: 1 Sectors: 15
0% [DEBUG] Formatting: Cylinder: 1 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 1 Head: 1 Sectors: 15
1% [DEBUG] Formatting: Cylinder: 2 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 2 Head: 1 Sectors: 15
2% [DEBUG] Formatting: Cylinder: 3 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 3 Head: 1 Sectors: 15
3% [DEBUG] Formatting: Cylinder: 4 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 4 Head: 1 Sectors: 15
5% [DEBUG] Formatting: Cylinder: 5 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 5 Head: 1 Sectors: 15
6% [DEBUG] Formatting: Cylinder: 6 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 6 Head: 1 Sectors: 15
7% [DEBUG] Formatting: Cylinder: 7 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 7 Head: 1 Sectors: 15
8% [DEBUG] Formatting: Cylinder: 8 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 8 Head: 1 Sectors: 15
10% [DEBUG] Formatting: Cylinder: 9 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 9 Head: 1 Sectors: 15
11% [DEBUG] Formatting: Cylinder: 10 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 10 Head: 1 Sectors: 15
12% [DEBUG] Formatting: Cylinder: 11 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 11 Head: 1 Sectors: 15
13% [DEBUG] Formatting: Cylinder: 12 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 12 Head: 1 Sectors: 15
15% [DEBUG] Formatting: Cylinder: 13 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 13 Head: 1 Sectors: 15
16% [DEBUG] Formatting: Cylinder: 14 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 14 Head: 1 Sectors: 15
17% [DEBUG] Formatting: Cylinder: 15 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 15 Head: 1 Sectors: 15
18% [DEBUG] Formatting: Cylinder: 16 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 16 Head: 1 Sectors: 15
20% [DEBUG] Formatting: Cylinder: 17 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 17 Head: 1 Sectors: 15
21% [DEBUG] Formatting: Cylinder: 18 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 18 Head: 1 Sectors: 15
22% [DEBUG] Formatting: Cylinder: 19 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 19 Head: 1 Sectors: 15
23% [DEBUG] Formatting: Cylinder: 20 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 20 Head: 1 Sectors: 15
25% [DEBUG] Formatting: Cylinder: 21 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 21 Head: 1 Sectors: 15
26% [DEBUG] Formatting: Cylinder: 22 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 22 Head: 1 Sectors: 15
27% [DEBUG] Formatting: Cylinder: 23 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 23 Head: 1 Sectors: 15
28% [DEBUG] Formatting: Cylinder: 24 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 24 Head: 1 Sectors: 15
30% [DEBUG] Formatting: Cylinder: 25 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 25 Head: 1 Sectors: 15
31% [DEBUG] Formatting: Cylinder: 26 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 26 Head: 1 Sectors: 15
32% [DEBUG] Formatting: Cylinder: 27 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 27 Head: 1 Sectors: 15
33% [DEBUG] Formatting: Cylinder: 28 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 28 Head: 1 Sectors: 15
35% [DEBUG] Formatting: Cylinder: 29 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 29 Head: 1 Sectors: 15
36% [DEBUG] Formatting: Cylinder: 30 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 30 Head: 1 Sectors: 15
37% [DEBUG] Formatting: Cylinder: 31 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 31 Head: 1 Sectors: 15
38% [DEBUG] Formatting: Cylinder: 32 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 32 Head: 1 Sectors: 15
40% [DEBUG] Formatting: Cylinder: 33 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 33 Head: 1 Sectors: 15
41% [DEBUG] Formatting: Cylinder: 34 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 34 Head: 1 Sectors: 15
42% [DEBUG] Formatting: Cylinder: 35 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 35 Head: 1 Sectors: 15
43% [DEBUG] Formatting: Cylinder: 36 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 36 Head: 1 Sectors: 15
45% [DEBUG] Formatting: Cylinder: 37 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 37 Head: 1 Sectors: 15
46% [DEBUG] Formatting: Cylinder: 38 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 38 Head: 1 Sectors: 15
47% [DEBUG] Formatting: Cylinder: 39 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 39 Head: 1 Sectors: 15
48% [DEBUG] Formatting: Cylinder: 40 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 40 Head: 1 Sectors: 15
50% [DEBUG] Formatting: Cylinder: 41 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 41 Head: 1 Sectors: 15
51% [DEBUG] Formatting: Cylinder: 42 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 42 Head: 1 Sectors: 15
52% [DEBUG] Formatting: Cylinder: 43 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 43 Head: 1 Sectors: 15
53% [DEBUG] Formatting: Cylinder: 44 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 44 Head: 1 Sectors: 15
55% [DEBUG] Formatting: Cylinder: 45 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 45 Head: 1 Sectors: 15
56% [DEBUG] Formatting: Cylinder: 46 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 46 Head: 1 Sectors: 15
57% [DEBUG] Formatting: Cylinder: 47 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 47 Head: 1 Sectors: 15
58% [DEBUG] Formatting: Cylinder: 48 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 48 Head: 1 Sectors: 15
60% [DEBUG] Formatting: Cylinder: 49 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 49 Head: 1 Sectors: 15
61% [DEBUG] Formatting: Cylinder: 50 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 50 Head: 1 Sectors: 15
62% [DEBUG] Formatting: Cylinder: 51 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 51 Head: 1 Sectors: 15
63% [DEBUG] Formatting: Cylinder: 52 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 52 Head: 1 Sectors: 15
65% [DEBUG] Formatting: Cylinder: 53 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 53 Head: 1 Sectors: 15
66% [DEBUG] Formatting: Cylinder: 54 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 54 Head: 1 Sectors: 15
67% [DEBUG] Formatting: Cylinder: 55 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 55 Head: 1 Sectors: 15
68% [DEBUG] Formatting: Cylinder: 56 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 56 Head: 1 Sectors: 15
70% [DEBUG] Formatting: Cylinder: 57 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 57 Head: 1 Sectors: 15
71% [DEBUG] Formatting: Cylinder: 58 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 58 Head: 1 Sectors: 15
72% [DEBUG] Formatting: Cylinder: 59 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 59 Head: 1 Sectors: 15
73% [DEBUG] Formatting: Cylinder: 60 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 60 Head: 1 Sectors: 15
75% [DEBUG] Formatting: Cylinder: 61 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 61 Head: 1 Sectors: 15
76% [DEBUG] Formatting: Cylinder: 62 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 62 Head: 1 Sectors: 15
77% [DEBUG] Formatting: Cylinder: 63 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 63 Head: 1 Sectors: 15
78% [DEBUG] Formatting: Cylinder: 64 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 64 Head: 1 Sectors: 15
80% [DEBUG] Formatting: Cylinder: 65 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 65 Head: 1 Sectors: 15
81% [DEBUG] Formatting: Cylinder: 66 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 66 Head: 1 Sectors: 15
82% [DEBUG] Formatting: Cylinder: 67 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 67 Head: 1 Sectors: 15
83% [DEBUG] Formatting: Cylinder: 68 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 68 Head: 1 Sectors: 15
85% [DEBUG] Formatting: Cylinder: 69 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 69 Head: 1 Sectors: 15
86% [DEBUG] Formatting: Cylinder: 70 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 70 Head: 1 Sectors: 15
87% [DEBUG] Formatting: Cylinder: 71 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 71 Head: 1 Sectors: 15
88% [DEBUG] Formatting: Cylinder: 72 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 72 Head: 1 Sectors: 15
90% [DEBUG] Formatting: Cylinder: 73 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 73 Head: 1 Sectors: 15
91% [DEBUG] Formatting: Cylinder: 74 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 74 Head: 1 Sectors: 15
92% [DEBUG] Formatting: Cylinder: 75 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 75 Head: 1 Sectors: 15
93% [DEBUG] Formatting: Cylinder: 76 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 76 Head: 1 Sectors: 15
95% [DEBUG] Formatting: Cylinder: 77 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 77 Head: 1 Sectors: 15
96% [DEBUG] Formatting: Cylinder: 78 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 78 Head: 1 Sectors: 15
97% [DEBUG] Formatting: Cylinder: 79 Head: 0 Sectors: 15
[DEBUG] Formatting: Cylinder: 79 Head: 1 Sectors: 15
98% 100%
[DEBUG] File System Creation
[DEBUG] Boot Sector -> 0
[DEBUG] FAT Sectors: 1 to 14 ->
0% 7% 14% 21% 28% 35% 42% 50% 57% 64% 71% 78% 85% 92% 100%
[DEBUG] FAT1 Start -> 1
[DEBUG] FAT2 Start -> 8
[DEBUG] Root Directory Sectors: 15 to 28 ... done.
[DEBUG] Root, Label, Timestamp -> 15
[DEBUG] File System Created
Format complete.
[DEBUG] DOS 7+, UNLOCKing drive (by one level)
[DEBUG] DOS 7+, UNLOCKing drive (by one level)
1,228,800 bytes total disk space (disk size)
1,213,952 bytes available on disk (free clusters)
512 bytes in each allocation unit.
2,371 allocation units on disk.
Volume Serial Number is 1C45-1A01
here is a log of format
On 3/23/25 20:09, Jerome Shidel via Freedos-devel wrote:
Hi,
On Mar 23, 2025, at 7:20 PM, victoria crenshaw via Freedos-devel
<freedos-devel@lists.sourceforge.net> wrote:
i cannot seem to format blank unformatted floppies
it fails to verfiy the disk after formatting the 1st 7 sectors even
though the disk will format on other format programs
anyone have an idea how and why this happens?
i may of found a use case that was not captured
--
founder of yellow rose group 💛️
Just a couple additional questions…
What version of Format? There were a lot of changes to format a couple months
back.
What type of diskette? 3-1/2, 5-1/4? 1.44, 1.2, 720, 360, other?
When you say “unformatted”, do they require a low-level format or just a DOS
file-system format?
:-)
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