18 Oct
2000
18 Oct
'00
12:42 a.m.
There's a 20.5 MB reserve, which is constant over all disc sizes I've seen (4GB, 9GB, 18GB; maybe someone can confirm it for 36GB). Presumably it's the fixed low-address area that was there even before right-sizing was invented.
Yes, it's the space at the beginning of the disk used for boot blocks, disk labels, bootable kernel image, and core dump (not the core dump files, just the area to which main memory is dumped on a crash - "savecore" saves that to the file).
It's 5,248 4096-byte blocks.