Date: Thu, 16 Mar 2017 19:47:52 -0700 From: Mehmet Erol Sanliturk <m.e.sanliturk@gmail.com> To: Matthias Apitz <guru@unixarea.de>, FreeBSD Questions Mailing List <freebsd-questions@freebsd.org> Subject: Re: bootable ext. USB SSD for backup Message-ID: <CAOgwaMuZnZFT8_T0R%2BfSW9ortEcc4dkA_-x%2BOsK=_D-r7e8hvQ@mail.gmail.com> In-Reply-To: <20170316194612.GA1748@c720-r314251> References: <20170316194612.GA1748@c720-r314251>
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On Thu, Mar 16, 2017 at 12:46 PM, Matthias Apitz <guru@unixarea.de> wrote: > > Hello, > > I have acquired a small and flat USB 3.0 external disk (must be SSD for > the size of the case): > > Mar 16 19:36:54 c720-r314251 kernel: da0: <TOSHIBA External USB 3.0 5438> > Fixed Direct Access SPC-4 SCSI device > Mar 16 19:36:54 c720-r314251 kernel: da0: Serial Number 20170114010787F > Mar 16 19:36:54 c720-r314251 kernel: da0: 40.000MB/s transfers > Mar 16 19:36:54 c720-r314251 kernel: da0: 953869MB (1953525164 512 byte > sectors) > Mar 16 19:36:54 c720-r314251 kernel: da0: quirks=3D0x2<NO_6_BYTE> > > Ofc it has not the promised 1 TB volume, just only 953869 MB, i.e. only > 1 Marketing-TB; > > I'm thinking in re-partitioning the disk (which is actual only one big > NTFS slice) with gpart(8), install even a kernel into a small FS at the > beginning and keep the rest as a big UFS for backups. Having it bootable > with a system could be handy if one has to rescue a system and restore > the last dunp. > > Any ideas/comments > > matthias > -- > Matthias Apitz, =E2=9C=89 guru@unixarea.de, =E2=8C=82 http://www.unixarea= .de/ =E2=98=8E > +49-176-38902045 > _______________________________________________ > > I am sorry to respond with respect to Linux . I think that FreeBSD will be a little similar . When NTFS external disk is used , it is not necessary to "mount" it : It is directly handled with LOSS of access right information of files . When a Linux file system is used , it is necessary to "mount" it for using it . You need to use it either as "root" or find a way to use it as a "user" . If it is bootable , with respect to my use of Fedora ( it may depend on version ) , booting is starting from external drive , but somewhere there is a "fixed" or "hard-coded" sda , etc. . When it is encountered , booting is switching to internal HDD . To prevent this switching , it is necessary to disconnect power of internal HDD units . The above issues are possible difficulties . Mehmet Erol Sanliturk
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