Date: Mon, 22 May 2023 21:51:40 -0600 From: Warner Losh <imp@bsdimp.com> To: Steve Kargl <sgk@troutmask.apl.washington.edu> Cc: FreeBSD Hackers <freebsd-hackers@freebsd.org> Subject: Re: gpart destroy efi partition? Message-ID: <CANCZdfrPwX=1SXnqu4_i0cyt-R38KH8_Jt97PDjRqci0cOXTAw@mail.gmail.com> In-Reply-To: <ZGw2tRM9edxKxXqO@troutmask.apl.washington.edu> References: <ZGw2tRM9edxKxXqO@troutmask.apl.washington.edu>
next in thread | previous in thread | raw e-mail | index | archive | help
--000000000000bbd09605fc544e7a Content-Type: text/plain; charset="UTF-8" On Mon, May 22, 2023, 9:45 PM Steve Kargl <sgk@troutmask.apl.washington.edu> wrote: > Is there a secret incantation for destroying an EFI > partition on a USB memstick? After installing FreeBSD, > I would like to re-use a memstick, but > > % gpart destroy da0 > gpart: geom 'da0': Read-only file system > % gpart destroy -F da0 > gpart: geom 'da0': Read-only file system > % gpart show da0 > => 40 60063664 da0 GPT (29G) > 40 60063664 1 ms-basic-data (29G) > % gpart delete -i 1 da0 > gpart: geom 'da0': Read-only file system > % dd if=/dev/zero of=/dev/da0 bs=1m > dd: /dev/da0: Read-only file system > What's mounted? Warner -- > Steve > > --000000000000bbd09605fc544e7a Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable <div dir=3D"auto"><div><br><br><div class=3D"gmail_quote"><div dir=3D"ltr" = class=3D"gmail_attr">On Mon, May 22, 2023, 9:45 PM Steve Kargl <<a href= =3D"mailto:sgk@troutmask.apl.washington.edu">sgk@troutmask.apl.washington.e= du</a>> wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margi= n:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Is there a secret= incantation for destroying an EFI<br> partition on a USB memstick?=C2=A0 After installing FreeBSD,<br> I would like to re-use a memstick, but<br> <br> % gpart destroy da0<br> gpart: geom 'da0': Read-only file system<br> % gpart destroy -F da0<br> gpart: geom 'da0': Read-only file system<br> % gpart show da0<br> =3D>=C2=A0 =C2=A0 =C2=A0 40=C2=A0 60063664=C2=A0 da0=C2=A0 GPT=C2=A0 (29= G)<br> =C2=A0 =C2=A0 =C2=A0 =C2=A0 40=C2=A0 60063664=C2=A0 =C2=A0 1=C2=A0 ms-basic= -data=C2=A0 (29G)<br> % gpart delete -i 1 da0<br> gpart: geom 'da0': Read-only file system<br> % dd if=3D/dev/zero of=3D/dev/da0 bs=3D1m<br> dd: /dev/da0: Read-only file system<br></blockquote></div></div><div dir=3D= "auto"><br></div><div dir=3D"auto">What's mounted?</div><div dir=3D"aut= o"><br></div><div dir=3D"auto">Warner=C2=A0</div><div dir=3D"auto"><br></di= v><div dir=3D"auto"><div class=3D"gmail_quote"><blockquote class=3D"gmail_q= uote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1e= x"> -- <br> Steve<br> <br> </blockquote></div></div></div> --000000000000bbd09605fc544e7a--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?CANCZdfrPwX=1SXnqu4_i0cyt-R38KH8_Jt97PDjRqci0cOXTAw>