Date: Wed, 15 Mar 2017 13:35:24 +0000 From: Israel Gelpi <igelpi@trioscs.com> To: Polytropon <freebsd@edvax.de> Cc: "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org> Subject: Re: LABEL (The FreeBSD Disklabel Editor) Message-ID: <20170315133522.5386317.83680.7791@trioscs.com> In-Reply-To: <20170315101324.484d5780.freebsd@edvax.de> References: <BN6PR02MB272290CACFAD3F604CB0924EC8240@BN6PR02MB2722.namprd02.prod.outlook.com>, <20170315101324.484d5780.freebsd@edvax.de>
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Thank you. You have given me a wealth of information. But as a novice I was=
need to study and understand these recommendations. =FDWish me success. :=
-)
Israel
Sent from my BlackBerry 10 smartphone.
Original Message
From: Polytropon
Sent: Wednesday, March 15, 2017 5:13 AM
To: Israel Gelpi
Reply To: Polytropon
Cc: freebsd-questions@freebsd.org
Subject: Re: LABEL (The FreeBSD Disklabel Editor)
=FD
On Tue, 14 Mar 2017 21:09:17 +0000, Israel Gelpi wrote:
> Hello Sir, I had a SUN enterprise which I tested using a
> HDD diagnostics software called SCSI Tool-Box Suite. After
> testing I wiped the drive and mistakenly erased the Disk
> Label making the drive unusable (the operating system would
> not "mount'). Could you advise me on the how, I could
> restore/repair the Disk Label and to proper wipe a SUN
> without erasing the disk label.
If you intend to mount the disk again on Solaris (default
Sun operating system), you'd need to do two things:
1. create a label on the disk (disklabel or bsdlabel)
2. initialize the file UFS system (newfs)
Without those two (!) things, you won't be able to mount it.
(NB: The following explanations are FreeBSD-specific.)
The FreeBSD installer does all those things, but you can
do it manually, too: Boot FreeBSD from CD or USB in live mode
(shell access), then issue the required commands for the disk,
for example if /dev/da0 is the disk in question (without testing,
just from my memory):
# bsdlabel -w /dev/da0
# bsdlabel -e /dev/da0
in the editor, change type for partition "a":
"unused" -> "4.2BSD", then save & exit
# newfs /dev/da0
If you need additional boot code on that disk (only required
if it should be a boot disk), write the boot code as well.
The same applies for newfs options you might want to add.
Now the disk /dev/da0 can be mounted. It contains a disklabel
with one BSD partition covering the whole disk,
often called "dedicated" because there i
You can find detailed information in "man bsdlabel" and "man
newfs". Additional online documentation can be found here:
https://www.freebsd.org/doc/handbook/disks-adding.html
https://www.freebsd.org/doc/faq/disks.html
http://www.wonkity.com/~wblock/docs/html/disksetup.html#_the_old_standard_m=
br
Note that FreeBSD encourages the use of gpart, a tool that
can be used both for MBR operations (fdisk + bsdlabel) and
GPT operations, but there's nothing wrong in using the "classic
tools" for "legacy work". ;-)
--
Polytropon
Magdeburg, Germany
Happy FreeBSD user since 4.0
Andra moi ennepe, Mousa, ...
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