For Mark Post and anyone else with some ideas, here's some details from a -heavily- edited console log. To restate the problem, the 201 disk, which was substantially increased in size, has no additional free space when mounted as root. But mount it at /mnt and it's 63% full.
IPL 201 dasd:initializing... dasd:Registered successfully to major no 94 dasd(eckd):ECKD discipline initializing dasd(eckd):0201 on sch 6: 3390/0A(CU:3990/01) Cyl:1000 Head:15 Sec:224 dasd(eckd):0201 on sch 6: 3390/0A(CU:3990/01): Configuration data read dasd(eckd):020E on sch 5: 3390/0A(CU:3990/04) Cyl:650 Head:15 Sec:224 dasd(eckd):020E on sch 5: 3390/0A(CU:3990/04): Configuration data read dasd:waiting for responses... dasd(eckd):/dev/dasdb(94:4),0201@0x6:(4kB blks): 720000kB at 48kB/trk compatible disk layout dasd(eckd):/dev/dasdo(94:56),020e@0x5:(4kB blks): 468000kB at 48kB/trk classic disk layout df Filesystem 1k-blocks Used Available Use% Mounted on /dev/dasdb1 453292 420672 9224 98% / /dev/dasdo1 453292 420672 9224 98% /mnt cat /proc/dasd/devices 0201(ECKD) at ( 94: 4) is dasdb:active at blocksize: 4096, 180000 blocks, 703 MB 020e(ECKD) at ( 94: 56) is dasdo:active at blocksize: 4096, 117000 blocks, 457 MB shutdown -h now DEF 201 1201 DASD 1201 DEFINED DEF 20E 201 DASD 0201 DEFINED DEF 1201 20E DASD 020E DEFINED IPL 201 dasd:initializing... dasd:Registered successfully to major no 94 dasd(eckd):ECKD discipline initializing dasd(eckd):0201 on sch 5: 3390/0A(CU:3990/04) Cyl:650 Head:15 Sec:224 dasd(eckd):0201 on sch 5: 3390/0A(CU:3990/04): Configuration data read dasd(eckd):020E on sch 6: 3390/0A(CU:3990/01) Cyl:1000 Head:15 Sec:224 dasd(eckd):020E on sch 6: 3390/0A(CU:3990/01): Configuration data read dasd:waiting for responses... dasd(eckd):/dev/dasdb(94:4),0201@0x5:(4kB blks): 468000kB at 48kB/trk classic disk layout dasd(eckd):/dev/dasdo(94:56),020e@0x6:(4kB blks): 720000kB at 48kB/trk compatible disk layout mount /dev/dasdo1 /mnt df Filesystem 1k-blocks Used Available Use% Mounted on /dev/dasdb1 453292 420636 9260 98% / /dev/dasdo1 708568 420476 252100 63% /mnt cat /proc/dasd/devices 0201(ECKD) at ( 94: 4) is dasdb:active at blocksize: 4096, 117000 blocks, 457 MB 020e(ECKD) at ( 94: 56) is dasdo:active at blocksize: 4096, 180000 blocks, 703 MB
