Gpt is not the issue. I have been using gpt since 10.04 but on smaller drives. I have it on my 160GB drive, my SSD & my flash drive I use for installs using grub to directly boot isos. And I have two other drives with MBR.
And we have seen users with very large RAID configurations which of course had to be gpt.
First is BIOS/UEFI set for AHCI? That should be set for SSD anyway. Not sure if any other BIOS settings may make a difference.
These are all BIOS issues that users have reported, of course most will not apply.
Some issues on booting install:
fixed the problem by adding rootdelay to grub.cfg this allows time for the usb drive to load.
Though my drive was appearing in the bios and working for install it was actually "disabled"!
BIOS settings need USB mouse & keyboard
BIOS in not updated to latest revision
BIOS not set to boot CD or USB first
BIOS shows floppy or firewire and you do not have those
changing newer BIOS SATA 6 Gbit/s from 6 Gbs to a SATA II - 3Gbs
BIOS & disable "Boot Sector Virus Protection"
Other BIOS settings - Security or locked down Boot sector, Bitlocker
Old BIOS, new drive 137GB max boot size or very large / partition over 100GB
https://help.ubuntu.com/community/BootPartition
https://help.ubuntu.com/community/Cr...onAfterInstall
NTFS partition needs chkdsk, gparted will not see drive if chkdsk flag set, flag is set on resize
Raid meta data on drive - even if one drive (Vendor happend to set it on)
Old gpt data on drive that is now MBR
Disable Quickboot in BIOS
turning off UDMA in the BIOS my problem has gone away.(old system & may make system slower)
BIOS setting, Keyboard response in grub really slow
Fast Boot setting prevents keyboard from working & other issues
Bios not loading no key works - disconnected power for about 10-15 minutes and the bios reset itself.
After update, It had reset to the BIOS defaults, setting the video to ONBOARD and switching off the dynamic video memory allocation (manually allocating 32Mb instead of leaving it as AUTO).
The mode for the disc was set to AUTO. Changed it to LBA. Then it worked.
Sometimes specific issues by motherboard like this:
[Natty] Marvell 88SE9120 IDE-Part not working
https://bugs.launchpad.net/ubuntu/+s...ux/+bug/777325
External drive needed separate power supply
Asus m4a87td core unlocker feature on usb3 was causing the problem
Asus - Security> I / O interface Security> "New interface card" or so. SET IT TO LOCKED!!!
In the Asus BIOS I selected Advanced Mode>Advanced>SATA Configuration.
Changed IDE Mode to AHCI Mode
Then,when the SATA3G_1 selection appears in the drive list below,select the Enabled option.
set pci=nomsi or other boot paramter
So to people with an Asrock Z77 Extreme4 motherboard: if you install Ubuntu, make sure the drives you are installing from and to are not connected to the Asmedia SATA ports!
lib64 folder missing??
http://ubuntuforums.org/showthread.php?t=2069764
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