I would advise you against trying to install Linux to drive you just
booted from - the things will likely go wrong as soon as the installer
start partitioning the drive.
While you could pre-partition the drive for the install before booting
from it - avoiding partitioning - you could still run into trouble when
making the partitions bootable.
Put the ISO on USB stick, you will save yourself a lot of time and
trouble. Here is how:
https://www.linuxunit.com/how-to-create-bootable-usb-key-centos7/
Alternatively you could setup boot server and install from that via PXE
- If you have spare PC and do not mind setting up DHCP, tftp, NFS
server and setting up PXE boot image. Although that would probably take
longer to setup than driving to the nearest store for a USB stick. The
advantage, you could automate it and use the setup to install a lot of
PCs pretty quickly.
Best luck, Tomas
On Thu, 2017-03-30 at 23:21 -0700, Nat Taylor wrote:
> Install from usb key?
> https://wiki.centos.org/HowTos/InstallFromUSBkey
> might fit on an 8gb, def a 16gb
>
> Or maybe just dd the install file onto your partition and pretend its
> a usb
> key and tell your bios to boot from that partition?
>
> dd if=CentOS-6.5-x86_64-bin-DVD1.iso of=/dev/sdb1
>
> note that I put the 1 on the end of /dev/sdb , as you are dd'ing to
> the
> partition, not the drive. Worth a try. make sure you get that
> partition
> right, so you don't wipe stuff out.
>
> On Thu, Mar 30, 2017 at 10:59 PM, Michael Robinson <
> [email protected]> wrote:
>
> > The CentOS 7 iso is 7.8 gigs. My DVD-R media tops out at about
> > half that. The server I'm trying to upgrade would have to use
> > an external DVD drive in order to upgrade from a DVD.
> >
> > I am trying to upgrade from CentOS 6.8 to CentOS 7.3. I want
> > to install CentOS 7.3 on a newly installed and unused 500 gig SSD.
> > So far, I have created a 10G ext2 partition at the beginning of the
> > new SSD and I have copied the CentOS 7.3 iso's contents to it. I
> > used a loop mount to mount the iso and then cp -av. I am trying
> > to figure out how to install from a local hard drive instead of
> > a DVD disk.
> >
> > I have Grub 1 in CentOS 6.8, is there a way to trigger the
> > installer
> > from my existing Grub on the second SSD? Can I seamlessly upgrade
> > the old CentOS 6.8 to use Grub 2 instead of Grub 1?
> >
> > _______________________________________________
> > PLUG mailing list
> > [email protected]
> > http://lists.pdxlinux.org/mailman/listinfo/plug
> >
> _______________________________________________
> PLUG mailing list
> [email protected]
> http://lists.pdxlinux.org/mailman/listinfo/plug
_______________________________________________
PLUG mailing list
[email protected]
http://lists.pdxlinux.org/mailman/listinfo/plug
