On Tue, 2025-04-01 at 17:35 +0200, Eric Auer via Freedos-devel wrote: > > Hi! > hii! :D > > [DEBUG] FORMAT 0.92a, selected drive B: > ... > > [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 > > Well, it did say "good luck". Formatting to 1494k in 1200k drives > does not always work. The log later shows that 1200k did work :-) > true! :D > The next question would be: Did you explicitly ask FORMAT to use > 1494k format? If not, have you used a floppy with that size right > before starting FORMAT? If yes, has this worked with other disks? > Is your drive a classic 5.25inch 1200k drive? Any specific details? > > Regards, Eric > yes! with /f:1494 yes it works perfectly with already formatted 1.2mb disks
it is a classic TEAC 1990 HD 5.25 FDD it is exactly this drive https://www.ebay.com/itm/296978062306 let me test it on more drives > > > Here is the part which shows that 1200k format did work for you: > > > > [DEBUG] FORMAT 0.92a, selected drive B: > ... > > Using drive default: 1200k (Cyl=80 Head=2 Sec=15) > > [DEBUG] Selecting int 13h ah=17h size class: 3 > ... > > [DEBUG] Formatting: Cylinder: 0 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 > > > > > > _______________________________________________ > Freedos-devel mailing list > Freedos-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/freedos-devel -- founder of yellow rose group 💛️ _______________________________________________ Freedos-devel mailing list Freedos-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-devel
