[Date Prev][Date Next] [Thread Prev][Thread Next] [Date Index] [Thread Index]

Re: writing iso file to usb stick with dd - garbled files - usb eject error?



Titus Newswanger composed on 2025-08-02 23:50 (UTC-0500):

> I've been meaning to learn how to sha512sum after it is written to disk. 
> Now I've got it. Here are my results:

> on the older usb disk that worked, sha512sum matched

> on the new faulty disk, after writing with dd, sha512sum did not match

> on the same faulty disk, after writing with "Disk Image Writer" and I 
> successfully installed trixie on a machine, I checked the usb disk and 
> sha512sum did not match 🙁 I thought I was finished with that server. 
> Now I need to decide if I will start over or just leave it and hope for 
> the best. Considering it is a mini pc used as a headless print server to 
> connect a little used usb only printer to my network, I think I will 
> just place a note in /etc/motd like:

> This copy of Debian was installed with a broken installer, expect anything!

Next time, consider the alternative to dd that I use:

	time ddrescue downloads/win10_22H2x64.iso /dev/sdh --force && sync

ddrescue output is verbose by default, and extremely rarely fails to write
successfully even on a poor quality stick.
-- 
Evolution as taught in public schools is, like religion,
	based on faith, not based on science.

 Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!

Felix Miata


Reply to: