On Saturday 10 February 2018 10:53:25 Thomas Schmitt wrote: > Hi, > > and again a miscalculation by differing block sizes. > > The adventurous proposal would be useless because working somewhere > in the still undamaged part of the image file. > skip= and seek= must be the numbers for blocks of 512 bytes rather > than of 64 KiB. > > So this proposal should have been > > dd if=/dev/sdd bs=512 skip=16500703 count=66 \ > of=rock-img-shrunk.img seek=16500703 > > Which was an instant return claiming 66 blocks had been copied.
gdisk is still fussing. gene@coyote:~/rock64.imgs$ gdisk -l rock-img-shrunk.img GPT fdisk (gdisk) version 0.8.5 Warning! Disk size is smaller than the main header indicates! Loading secondary header from the last sector of the disk! You should use 'v' to verify disk integrity, and perhaps options on the experts' menu to repair the disk. Caution: invalid backup GPT header, but valid main header; regenerating backup header from main header. Warning! Error 25 reading partition table for CRC check! Warning! One or more CRCs don't match. You should repair the disk! Partition table scan: MBR: protective BSD: not present APM: not present GPT: damaged **************************************************************************** Caution: Found protective or hybrid MBR and corrupt GPT. Using GPT, but disk verification and recovery are STRONGLY recommended. **************************************************************************** Disk rock-img-shrunk.img: 16500769 sectors, 7.9 GiB Logical sector size: 512 bytes Disk identifier (GUID): 1C7D4C86-35A6-4E6A-B3E3-2A6BEB44FDD0 Partition table holds up to 128 entries First usable sector is 34, last usable sector is 125171678 Partitions will be aligned on 64-sector boundaries Total free space is 108670973 sectors (51.8 GiB) Number Start (sector) End (sector) Size Code Name 1 64 8063 3.9 MiB 8300 loader1 2 8064 8191 64.0 KiB 8300 reserved1 3 8192 16383 4.0 MiB 8300 reserved2 4 16384 24575 4.0 MiB 8300 loader2 5 24576 32767 4.0 MiB 8300 atf 6 32768 262143 112.0 MiB 0700 boot 7 262144 16500735 7.7 GiB 8300 root gene@coyote:~/rock64.imgs$ > Have a nice day :) > > Thomas All three of these cards will boot the rock64, but two snags. 1. at around 7 to 10 seconds into the boot, after having discovered the spinning rust drive plugged into the usb-3 port, everything stops for 90 seconds, and it been doing this for quit a while. I assume its doing a silent e2fsck. Then after some more blather, 2. it reports the root account is locked and that I should press enter. Nothing else seems to happen until I press enter, at which point it starts xfce into what looks like a normal gui. And it appears everything except synaptic works from the menu's. And to get synaptic to run on stretch is different from jessie, whereas on wheezy its a simple synaptic-pkexec, from any login on my net, put in the passwd for myself and bob's your uncle. Somebodies paranoia is excessive IMNSHO. Oh, and 3. it did not autoresize part7 during the boot, so I am assuming a need to touch a file to make that happen again. So now I have 3 cards that will all boot and run. Now I have to learn how to do a manual make install, probably with mc since this is a "u-boot" booter. No grub , no lilo. I wonder who that expert might be? Many Thanks, Thomas Schmitt. -- Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) Genes Web page <http://geneslinuxbox.net:6309/gene>