Just to confirm again that everything is working well with the win8.1/LL dual-boot setup with UEFI enabled.
The directories in /mnt/DATA on sdb are accessible by both OSes, without any glitches, & also accessible by win7 set up in a virtual machine (Oracle Virtualbox) within LL.
A good job done - many thanks again goldfinger for your help - without it, I wouldn't have been able to achieve this...
I am now ticking this thread as 'topic solved'
Regards
Mike
PS. I'll put together a tutorial on the UEFI enabled dual-boot set up a bit later, when I have a bit more free time.
The directories in /mnt/DATA on sdb are accessible by both OSes, without any glitches, & also accessible by win7 set up in a virtual machine (Oracle Virtualbox) within LL.
A good job done - many thanks again goldfinger for your help - without it, I wouldn't have been able to achieve this...

I am now ticking this thread as 'topic solved'
Regards
Mike
PS. I'll put together a tutorial on the UEFI enabled dual-boot set up a bit later, when I have a bit more free time.
64bit OS (32-bit on Samsung[i] netbook) installed in [i]Legacy mode on MBR-formatted SSDs (except pi which uses a micro SDHC card):
2017 - Raspberry pi 3B (4cores) ~ [email protected] - LibreElec, used for upgrading our Samsung TV (excellent for the task)
2012 - Lenovo G580 2689 (2cores; 4threads] ~ [email protected] - LL3.8/Win8.1 dual-boot (LL working smoothly)
2011 - Samsung NP-N145 Plus (1core; 2threads) ~ Intel Atom [email protected] - LL 3.8 32-bit (64-bit too 'laggy')
2008 - Asus X71Q (2cores) ~ Intel [email protected] - LL4.6/Win8.1 dual-boot, LL works fine with kernel 4.15
2007 - Dell Latitude D630 (2cores) ~ Intel [email protected] - LL4.6, works well with kernel 4.4; 4.15 doesn't work
2017 - Raspberry pi 3B (4cores) ~ [email protected] - LibreElec, used for upgrading our Samsung TV (excellent for the task)
2012 - Lenovo G580 2689 (2cores; 4threads] ~ [email protected] - LL3.8/Win8.1 dual-boot (LL working smoothly)
2011 - Samsung NP-N145 Plus (1core; 2threads) ~ Intel Atom [email protected] - LL 3.8 32-bit (64-bit too 'laggy')
2008 - Asus X71Q (2cores) ~ Intel [email protected] - LL4.6/Win8.1 dual-boot, LL works fine with kernel 4.15
2007 - Dell Latitude D630 (2cores) ~ Intel [email protected] - LL4.6, works well with kernel 4.4; 4.15 doesn't work