@Ruskie_it: Assume nothing survives except what's explicitely listed in the JB: JB, MKK, RP, CRP.
@eschwartz: Nope, it didn't even try to mntroot ro, because my error handling is currently messy as hell ^^.
@knc1: Yup, but I like the safety & logging features of lab126's mntroot, so if I were to do it myself, it would pretty much look like the existing mntroot script in the end
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