On Mon 02 Sep 2024 at 11:16:53 (-0400), Michael Stone wrote: > On Sun, Sep 01, 2024 at 09:58:22AM -0500, David Wright wrote: > > > On Sat, Aug 31, 2024 at 09:59:47PM -0500, David Wright wrote: > > > > On Sat 31 Aug 2024 at 14:09:45 (-0400), Lee wrote: > > > > > On Sat, Aug 31, 2024 at 1:31 AM John Conover wrote: > > > > > > > > > > > > What does a "debian ... amd64-netinst.iso" do > > > > > > with an .iso? > > > > > > > > > > > > Can it be coverted to a USB. How? > > > > > > > > > > https://www.debian.org/releases/bookworm/amd64/ch04s03.en.html > > > > > > > > > > # cp debian.iso /dev/sdX > > > > > > > > The disadvantage of this method is how to check the USB has a good copy. > > > > > > I don't understand why it would be any harder or easier to check that > > > there's a good copy with cp vs some other tool, so this seems like > > > strange advice. > > > > So your command line would read … > > What are you even going on about?
Well, I might expect you to use a command something like: # dd bs=1M if=/dev/sdX of=/dev/stdout count=N | sha512sum to check for a good copy. And yet you seem awfully keen to avoid using dd because of its alleged "cargo cult voodoo", whatever that is, and because apparently you can screw it up with typos (what, in "dd", "bs", "if" and "of"?). But about the only method I've seen to check the copy is good is to use dd. If you've copied the file with dd, you don't even have to type half of the checking command because of command history. And you don't have to calculate the count of blocks to check because dd has just told you that. That's leaving aside the fact that if copying (or checking) is taking a suspiciously long time, you can ascertain dd's progress even when you didn't ask for progress in the command line. Like you, I can't see the point of using dcfldd. Its man page advertises that it can verify the target drive, but that doesn't work for this particular application. And ddrescue seems to be another program that's pointless for this use. As for cp, I don't see any particular benefit, and a disadvantage is that it's mute. Sorry if I tried your patience. (BTW I am subscribed.) Cheers, David.
