On Sun, Sep 1, 2024 at 5:00 PM Thomas Schmitt wrote: > > Hi, > > Lee wrote: > > [...] I'd spin my wheels trying to > > figure out what's wrong and not too much later say f*kkit and boot off > > my just written USB drive. > > [...] > > $ check_debian_iso SHA512SUMS debian-12.7.0-amd64-netinst.iso /dev/sdb > > ... > > 661651456 bytes (662 MB, 631 MiB) copied, 7.11874 s, 92.9 MB/s > > MISMATCH: '/dev/sdb' checksum differs from > > 'debian-12.7.0-amd64-netinst.iso' in 'SHA512SUMS' > > [...] > > $ check_debian_iso SHA512SUMS debian-12.7.0-amd64-netinst.iso > > ... > > 661651456 bytes (662 MB, 631 MiB) copied, 2.65785 s, 249 MB/s > > Ok: 'debian-12.7.0-amd64-netinst.iso' matches > > 'debian-12.7.0-amd64-netinst.iso' in 'SHA512SUMS' > > The script correctly truncated the data stream from /dev/sdb to the > size that it read from the superblock of its ISO filesystem. > If the checksums do not match, then some bytes in that range on /dev/sdb > are not as they are in debian-12.7.0-amd64-netinst.iso. > > > If you are interested in learning where, please keep the stick as it is > now. Especially do not mount its EFI partition and do not plug it into > a running MS-Windows system, which would happily alter bytes in that > partition.
Oops.. I wrote to the stick using the Cygwin cp on an MS-Windows machine, so I'm guessing the damage was done even before ejecting the stick. But I'm more interested in what went wrong than exactly where the write/verification failed. I tried everything all over again on my Debian machine and .. it all works :) as expected even!! so yeah, the obvious conclusion is that "what went wrong" is that I used a Windows machine. *sigh* As a very low priority, how was I able to install Debian on my laptop and have everything work when I did the exact same thing for my laptop? download the .iso on the windows machine cp the iso to /dev/sdb using cygwin on the windows machine boot the laptop from the usb stick and install debian My June "how2 format a flash drive" msg was after installing Debian on the laptop. Lee
