Dear Forumer,
I tried to install syslinux to my pendrive but note me to sector size is not 512b.
How can i change my sector size from 2048 to 512b for install syslinux on it?

HUH??

I never heard of that. I just run install it to whatever flash I have and when it fails it fails for other reasons.

HP had one of the best tools to fix stubborn flash drives. There was a flip bit program that might fix a few others. But you don't need to change the geometry of the drive. Pretty hard to do also.

Why do you want to do this?

I found it by parted and fdisk ,

root@bt:~# parted /dev/sdb
Warning: Device /dev/sdb has a logical sector size of 2048. Not all parts of GNU Parted support this at the moment, and the working code is HIGHLY EXPERIMENTAL.

GNU Parted 2.2
Using /dev/sdb
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) p
Model: SONY WALKMAN (scsi)
Disk /dev/sdb: 3974MB
Sector size (logical/physical): 2048B/2048B
Partition Table: msdos

Number Start End Size Type File system Flags

(parted) q
root@bt:~# fdisk -l

Disk /dev/sda: 1000.2 GB, 1000203804160 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xee9eee9e

Device Boot Start End Blocks Id System
/dev/sda1 * 1 13 102400 7 HPFS/NTFS
Partition 1 does not end on cylinder boundary.
/dev/sda2 13 12749 102297600 7 HPFS/NTFS
/dev/sda3 12749 117284 839680000 7 HPFS/NTFS
Partition 3 does not end on cylinder boundary.
/dev/sda4 117284 121602 34678785 5 Extended
/dev/sda5 117284 120931 29295616 83 Linux
/dev/sda6 120932 121602 5382144 82 Linux swap / Solaris
Note: sector size is 2048 (not 512)

Disk /dev/sdb: 3974 MB, 3974103040 bytes
123 heads, 62 sectors/track, 254 cylinders
Units = cylinders of 7626 * 2048 = 15618048 bytes
Sector size (logical/physical): 2048 bytes / 2048 bytes
I/O size (minimum/optimal): 2048 bytes / 2048 bytes
Disk identifier: 0x6f20736b

I meant I never heard of trying to change it.

Did you get it working?

With 0,1 anything is possible ...
I think that like this link http://www.syslinux....ary/007870.html i must changed sector size in syslinux source !!
can anyone help me to change sector size in syslinux source from 512 to 2048 ??