how to shift break to run !BOOT when in drive 1

[rph]

I have a dual drive set up with Drive 1 the 5 1/4 drive and the gotek set for drive 0.
Anyone know how to shift break to run !BOOT when in drive 1?
I *DRIVE 1, then want to run the !BOOT from the gotek which is drive 1, but no luck. I've gone through both floppy books that I have and a rummage online but no luck.
Any help appreciated.
Thanks

[cmorley]

I don't think it is possible.
You need to *EXEC !BOOT, after changing to drive 1, instead.

[flaxcottage]

The only way I know is to have a switch to swap the drive numbers.

[gidandridge]

I do this by just typing *DRIVE 1 and then pressing SHIFT-BREAK

"Works on my machine"

[BeebMaster]

The 8271 DFS defaults to drive 0 when using SHIFT-BREAK so you can't autoboot from drive 1 (or 2 or 3). You'd have to use *EXEC !BOOT if OPT is 3 or *RUN !BOOT if OPT is 2.

Master 1770 DFS (probably the same for Model B 1770) does remember the drive on SHIFT-BREAK so it will autoboot the currently selected drive.

[BeebMaster]

Hmmm....correction...Master 1770 DFS doesn't allow SHIFT-BREAK from drive 1 after all, I thought it did!

2.24, 2.28 and 2.45 all look at drive 0 after *DRIVE 1 then SHIFT-BREAK.

I don't have a 1770 Model B, but the Acorn Disc System User Guide issue 2 says this on the subject:

As far as the Disc Filing System is concerned, hard break is the same as switching the computer off and then on again. The directory and library are set to :0.$ and any open files are forgotten about. Data written to a file which is still open may be lost. (Cold start.)
When you do a soft break, the Disc Filing System preserves its status, ie the directory and library remain the same, and open files remain open, but again
— data may be lost. (Warm start.)
If you press SHIFT BREAK to make the Disc Filing System auto-start using the !BOOT file, the Disc Filing System does a cold start as per CTRL BREAK .

And it appears to be hard-coded to drive 0 anyway:

Auto-start facilities
Sometimes it is useful to make a program or a file on one of your discs *LOAD, *RUN or *EXEC automatically when you insert the disc and press SHIFT and BREAK . This can be done using a file named !BOOT. !BOOT is a special file name recognised by the filing system when you start the computer by pressing SHIFT BREAK . If there is a file of specification
:0.$.!BOOT
the filing system will do one of four things according to the option set on the disc using *OPT 4,n

This behaviour is confirmed in the 1770 addendum:

Normally, discs are booted-in by using SHIFT and BREAK ( or SHIFT D BREAK if DFS is not your default filing system). This procedure will automatically *EXEC a file called !BOOT from drive 0.

[rph]

The *EXEC seems to work a treat. Time to load up Snapper for the kids.!

[BeebMaster]

I do this by just typing *DRIVE 1 and then pressing SHIFT-BREAK

"Works on my machine" :?

What hardware & software are you using? I don't get that behaviour here.

[gidandridge]

I do this by just typing *DRIVE 1 and then pressing SHIFT-BREAK

"Works on my machine"

What hardware & software are you using? I don't get that behaviour here.

Umm ... RetroClinic RamFS

Sorry! Seems I've been using DataCenter quite a lot over the last few weeks and have taken its behaviour for granted. Checked using my 1770 DFS with my PACE Drives and yes, embarrassingly ....

"Doesn't work on my machine"

* slopes away *