RISCOS 5.21 not booting when installed from NOOBS 1.3.8 - Raspberry Pi Forums

hi all,
i've been happily running older (5.19) versions of riscos raw images , decided give latest noobs (1.3.8) go.
has new 5.21 version of riscos. other oss tried (raspbian, arch, openelec) boot fine, riscos gets stuck ok/disc access light on after "no keyboard detected, autobooting"

there network activity, don't think there issue connectivity, , in fact can flash same version raw image , works fine. doesn't pause @ point.

also, if power off , restart same point time tells me free space map bad. once that's happened doesn't hang, won't mount sdfs::$ filesystem either, after running checkmap.

i've used sdformatter program, , non-standard thing i've done reduce size of root partitions of openelec, arch , raspbian (not riscos or recovery know these sensitive locations) can fit on 8gb card i'm using.
can see sdfs::$ partition using * commands @ cli, won't appear under sdcard on desktop.

have ideas?

thanks
jonathan

edit: corrected sdcard size

if try again, work differently if use different keyboard?
work differently if boot no keyboard connected?

....
hmm, double-checked myself using noobs 1.3.8 , installed risc os twice - once usb keyboard connected, , once usb mouse connected. both times risc os booted fine after installation!
(so keyboard thing red herring)

have got different sd card try using? maybe it's kind of odd sd incompatibility?

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