And she changed it from AHCI to compatibility mode (had to change itto that mode to make the drive being recognized?), which is not the best setting regarding speed.
Alexander: The she is actually a he :)
Quite right, sorry, I'd read it backwards. So presumably either a bug in the AHCI support, or a limitation/bug of the kernel driver? jh
John: Actually, this is a complete false alarm.
Actual Solution: You don't have to change anything on these laptops. But it is a good tip that when installing from external cd/dvdrom, if it first does not work, change usb port and try again.
I changed back the BIOS to AHCI. I was previously plugged into the top left USB port I.e. the one on the left hand side closes to the monitor or back side.
When lenovo's external CDROM/DVD is plugged into this port, I am unable to install linux in general or other OS's. Once I plug it into any of the other USB ports bottom left or right, it works perfectly.
No wonder I haven't found any problem posts regarding x220 and CentOS/RHEL.
Thanks for all your time supporting me. Fantastic responses on this mailing list.
Use external CD/DVD ROM, just ensure to plug it into the right port :)
Cheers, Janne "Janski" Nyman E: jnyman@jbtec.org
On Sun, 11 Sep 2011, Janne TH. Nyman wrote:
When lenovo's external CDROM/DVD is plugged into this port, I am unable to install linux in general or other OS's. Once I plug it into any of the other USB ports bottom left or right, it works perfectly.
No wonder I haven't found any problem posts regarding x220 and CentOS/RHEL.
Thanks for all your time supporting me. Fantastic responses on this mailing list.
Use external CD/DVD ROM, just ensure to plug it into the right port :)
I might be wrong, but is it possible that this port is USB3? That way the BIOS would be able to boot the CD from it, but neither linux nor windows is likely to have suitable drivers for using it.
jh
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Janne TH. Nyman -
John Hodrien