BCD lists myserty "U" drive and not my drives


Two internal matched laptop SATA drives and a backup Esata drive. [i have had so much grief with Vista that i want backups]

Although oddly numbered, this worked perfectly for six months:

Drive 1 C vista
Drive 1 G data
Drive 2 F vista
Drive 2 I data
Esata 1 L vista
Estata 1 M data

On saturdays I backup drive 1 to drive 2. Once a month, I backup to esata.

All perfect so far, dual boot to either drive 1 or drive 2

I just installed the monster MS Office Suite and suddenly it will not boot, nor show the BCD boot option. Dead stuck.

Inside CMOS [F2] I swapped drive 1 and drive 2 boot sequence and it sort of works. It gives me the boot option list, and I choose drive 1 -perfect.

But in Eassy BCD 1.7.2, it will not allow me to use F as a boot. I select F, but it comes back "U".

I have no idea where "U" came from. I also cannot boot to drive 2 any longer.

I tried to delete all BCD entries, reset MBR, and start over. It shows drive 1 fine, but insists on using drive "U" for the second drive, which does not work.
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Hi Robert. welcome to NST.
That's a bug in 1.7. Fixed in 2.0
Either install 2.0 and remove/add it again, or you can workaround by adding in 1.7, then "change settings" to the correct drive letter. (U means unknown - not U:\)