On Tue, 4 Jun 2013, Goh Lip wrote:
The allocation of disk numbering (sda, sdb...or (hd0, hd1...) is done by bios
and the OS will use whatever the bios determine.
Also this numbering is not consistent with each reboot.
We should always set "master" and "slave" for jumper wires or use correct
primary or secondary cabling (but if you have 1 master and 2 slaves, the
slaves will continue to be changeable).
And...use grub2. Grub-legacy 'calls out' partition using (hdx,y) or sdxy
whereas grub2 'searches' using UUID.
fstab had changed to UUID from sdxy years ago to overcome problems like this.
hi Goh,
I don't understand the relation between my question and your answer:
the problem was with the BIOS boot sequence, and as far as I know,
this is totally independant of any OS.
the boot sequnce, which was since the installation, several years ago:
1 dvd drive
2 ST3250410AS
and I found it has been replaced with:
1 dvd drive
2 ST3750640AS
and the problem disappeared, without any change in grub,
as soon as I reverted to the original BIOS boot sequence
So, my question is still: how can a boot sequence change, without entering
into BIOS at boot.
best regards,
--
Pierre Frenkiel
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