On Monday 26 January 2009, Lukasz Jaroszewski wrote: > 2009/1/26 Christoph Mallon <[email protected]>: > > Lukasz Jaroszewski schrieb: > >> 2009/1/26 Hans Petter Selasky <[email protected]>: > >>> On Monday 26 January 2009, Lukasz Jaroszewski wrote:
Hi, > > It would be helpful, if you showed the actual code, instead of letting us > > guess what you are doing. > > Ok, I solved that, I were trying to dd with bs correctly set, tho > if=./s wasn't big enough plus I had code like below, where I didn't > check write for errors, just called perror, which gave me wrong errno. > > So to change one byte, I need to read it, change it, and write it in > 512 chunks? Yes! Maybe you should not write single bytes at a time in your design. > or play with kernel and add smth like ``write_byte'' to > ata? From my knowledge there is no standard harddisk command or SCSI command that can change only one byte at a time of the disk. It is all block based. And note that the block size can be different from 512 bytes. --HPS _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[email protected]"
