On 04.03.2013 17:27, Bob Lemar wrote: > Thank you for your replies. > > > Yes, it is definitely BIOS problems as it doesn't allow to boot from > external drive directly (via BIOS boot order settings). It doesn't > show this drive at <F10> boot menu even after soft reboot. So BIOS > doesn't provide access to GRUB like to any other drives or USB > flashes. > > And I suppose to think that it is not a bug, it is a feature. And > feature of external drive, not a BIOS.
Wrong. Not supporting 4K disks is simply a lack of support, nothing else. As for manufacturers producing such drives reasons are several and partially in an attempt to mitigate msdos partition limitation. > - BIOS behavior is correct (it power up USB); It has also to propose the disk to boot from and if chosen, boot from it. > - Ales, you were absolutely right with floppy for booting CD trick > example. While MB, HDD firmwares and bootloader have predictable and > correct behavior some users would like to have bootloader feature > (GRUB command) that wake up external HDDs and re-detect drives. BIOS accessing disks is already wakeup enough.> I did: (1) clone linux to external drive; (2) correct fstab at. You can access the disk in GRUB using own GRUB modules but you can't chainload on such drives as it would require BIOS support.
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