On 04/13/2014 10:16 PM, Hugo Vanwoerkom wrote: > Hi, > > So I got a script that backs up the USB stick to a file and restores a > (larger) USB stick from that file all using dd. It is here: > > http://paste.debian.net/93598 >
That's small enough that you should have included it in the email, in my opinion. > the relevant parts are the backup: > > dd conv=notrunc,noerror bs=4096 if=$usbDrive | gzip > $backupFilename > > and the restore: > > gzip -dc $backupFilename | dd of=$usbDrive > > Makes perfect copy AFAICT, but it does not boot and the original USB > stick does. Completes w/o errors. > > Can any dd expert tell me what I am doing wrong? Actually, the really relevant part is the variable definitions. Specifically: usbDrive=/dev/sde1 You're not backing up and restoring usb drives, you're backing up and restoring a partition on usb drives. The partition table and bootloader aren't handled by your script. No bootloader=no booting. :) I'd suggest getting the whole device (/dev/sde) unless you're planning to restore to a drive with other partitions you want to preserve. > > Hugo > > Another suggestion: Look into ddrescue (package name is gddrescue). It's more flexible when dealing with drives that have problems. - PaulNM -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/534b59a0.40...@paulscrap.com
