*From:* Tim via users <[email protected]>
*Sent:* Thursday, 2 October 2025 at 16:03 UTC+10
*To:* Community support for Fedora users <[email protected]>
*Cc:* Tim <[email protected]>
*Subject:* RE: Recently I killed my system
On Wed, 2025-10-01 at 12:59 -0500, Roger Heflin wrote:
Does "a disk drive from a defunct CentOS-7 system was mounted. "
include physically cabling the drive in and/or connecting the given
drive or just mounting a disk device that has been there the entire
time?
If you physically added a another disk it may be booting from the
wrong disk and/or the added disk may be confusing grub in some manner
because it is an earlier device than the real boot disk.
If you do that kind of thing; have a removeable drive plugged into a
motherboard SATA port, that's not meant to ever be the boot drive.
e.g. You temporarily plug in drives to rescue things, rather than doing
drive hardware swapping for dual/triple/quadruple OS booting reasons.
Then you might want to do this: Open up the case and ensure that your
main drive is plugged into the first SATA port, and other drives are
connected to higher number ports. Check the motherboard manual if the
ports don't have obvious labelling on them.
Most motherboards apply a ranking to their ports, and you always want
your boot drive to be /dev/sda (for instance) and the next drive to be
/dev/sdb (for example).
I have an asus motherboard where either the motherboard doesn't apply a
ranking to the ports or Fedora ignores the ranking. I have an SSD (which
has Windows drive C, Fedora Boot and Ubuntu Boot on it) and 4 3TB hdd's,
with the SSD plugged into port 1 on the motherboard and the hdd's
plugged into ports 3 - 6. When Fedora starts up it sees the SSD as
/dev/sdc, two of the hdd's as /dev/sda and /dev/sdb and the other two as
/dev/sdd and /dev/sde.
regards,
Steve
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