On Sun, Apr 21, 2002 at 08:28:14AM -0700, Gangikunta Sreedhar wrote: > i wanted to make a boot floppy for my linux box. > Inserted the floppy and typed > dd if=/boot/vmlinuz-2.4.10 of=/dev/hda1 bs=512. > instead of typing of=/dev/fd0 and i wrongly typed > of=/dev/hda1. Unix system administration, lesson #1: Unix gives you enough rope to shoot yourself in the foot. Don't do *anything* as root, unless you really need to. Floppy access for normal users can be arranged by simply making dev/fd0 read/write for everybody (chmod 666 /dev/fd0), or by making the device read/write for owner and group and adding users to the appropriate group (adduser XXX floppy on a Debian system). > After the command got exectued, i am not able to see > any thing in my directories. Like when i type ls it is > not showing and files. > Please let me know how i can revert back to the > original position. You can't. There is a small chance that you can get some part back, but you certainly can't get back to the original position. > Any help is greatly appreciated. Backup /dev/hda1 as a file on a different filesystem: dd if=/dev/hda1 of=file-on-different-fs bs=4k Read and *understand* the manual pages of e2fsck, debugfs, and mke2fs. Run a variaty of e2fsck, debugfs and mke2fs -S on the copy (*never* on /dev/hda1). Make a new copy of the partition if necessary. The tools will probably complain about the superblocks: backup superblocks can usually be found at block number n*8192+1. Erik -- J.A.K. (Erik) Mouw, Information and Communication Theory Group, Faculty of Information Technology and Systems, Delft University of Technology, PO BOX 5031, 2600 GA Delft, The Netherlands Phone: +31-15-2783635 Fax: +31-15-2781843 Email: J.A.K.Mouw@its.tudelft.nl WWW: http://www-ict.its.tudelft.nl/~erik/ -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
