Accessing data on floppy

[MWM]

I am having problems finding data on a floppy disk.  According to the inode in the EXT2 file system that i am working with, the data I am looking for is stored block 33H (51 decimal). I am trying to access this data using INT 13 AH=02H, but i am not sure what parameters use.  Can someone please tell me what to enter for the following to get data in block 33H :

  1) cylinder number
  2) head number
  3) sector number

My floppy drive parameters returned by  INT 13 AH=08h are as follows:

  maximum head number = 1
  maximum sector number = 12h (18 decimal)
  maximum cylinder number = 4F (79 decimal)

Any help is greatly appreciated.
Thank You
MWM

[Khumba]

Track 0, Head 1, Sector 15d.

[MWM]

Thanks for your help Khumba, could you please tell me how you came up with those numbers, so that i can figure this out for myself in the future.

thank you
MWM

[Anonymous]

you can probably assume 512-byte sectors for floppy disks

get the block size from the ext2 superblock; probably 1K

assuming 1K blocks and 512-byte sectors, there are 2 sectors per block,
so block 51 = sector 102

convert to LBA: sectors_per_track = 18, heads = 2,
sector = LBA % sectors_per_track + 1 = 13
head = LBA / sectors_per_track % heads = 1
cylinder (track) = LBA / sectors_per_track / heads = 2

Track 2, Head 1, Sector 13? that's my guess, probably wrong

>My floppy drive parameters returned by  INT 13 AH=08h are as follows:

INT 13h AH=08h is useless for floppies. it will ALWAYS say 18 sectors per track, even if there are 19, 20, or 21