RSX11M+ on SIMH - Copying RSX Disks to Increase Available File Headers
Now we need to mount (foreign) the two disks that we copied from the original baseline disk and make a bootable disk with more file headers. The RQ disks in sim have now become DU disks in RSX.
>SHOW DEV DU
DU0: Public Mounted Loaded Label=RSX11MPBL87 Type=RD54
DU1: Loaded Type=RD54
DU2: Loaded Type=RD54
DU3: Loaded Type=RX50
Note that most RSX commands can be abbreviated to 3 letters. Also, not all utilities are installed. To install BRU type:
We are now ready to use BRU to make a disk with more headers. To learn more about BRU you can type HELP BRU. I chose to increase the # of file headers to 8000 from 3308 and also increase the maximum allowed headers to 15,000.
BRU -- *WARNING* -- No bad block data file found
BRU - Completed
Now we can check to see if the DU2: has the increased number of file headers. We need to dismount the disks then mount them as Files-11, public volumes.
16:31:58 *** DU1: -- Dismount complete
DMO -- TT0: dismounted from DU1: *** Final dismount initiated ***
16:32:04 *** DU2: -- Dismount complete
DMO -- TT0: dismounted from DU2: *** Final dismount initiated ***
Pack serial: 00000001236
DU2: has 168740. blocks free, 142460. blocks used out of 311200.
Largest contiguous space = 147509. blocks
12097. file headers are free, 2903. headers used out of 15000.