On Monday 19 Sep 2016 13:08:29 Mike Gilbert wrote: > On Mon, Sep 19, 2016 at 10:23 AM, Peter Humphrey <pe...@prh.myzen.co.uk> wrote: > > Hello list, > > > > I'm trying to install a customised version of SysRescCD on a USB drive, > > and > > it's all uphill. > > > > The current stage has me trying to create a UEFI boot entry for it. I have > > several entries I no longer need and I'm trying to delete them with > > efibootmgr. This is what happens: > > > > # efibootmgr --remove-dups > > BootCurrent: 0002 > > Timeout: 1 seconds > > BootOrder: 0003,0001,0000,0002,0008,0009,0010,0014 > > Boot0000* SysRescCD > > Boot0001* SysRescCD > > Boot0002* Linux Boot Manager > > Boot0003* SysRescCD > > Boot0008* CD/DVD Drive > > Boot0009* Hard Drive > > Boot0010* UEFI OS > > Boot0014* UEFI: SanDisk > > > > # efibootmgr --delete-bootnum 0001 > > You must specify an entry to delete (see the -b option). > > > > But I have - number 1. The manual says: > > > > -b | --bootnum XXXX > > > > Modify BootXXXX (hex) > > > > -B | --delete-bootnum > > > > Delete bootnum (hex) > > > > No variation of 1, 01, 0x1, 0x0001 etc. makes any difference. I know I'm > > not as bright as I used to be, but what on earth have I got wrong? /boot > > is mounted. > > The manpage seems to be incorrect; -B/--delete-bootnum does not take > any argument. Instead, you must specify the entry number using the -b > option. > > Try this: > > efibootmgr -b 0001 -B
I recall having a similar problem and this worked last time I tried: efibootmgr -b 0002 --delete-bootnum Boot0002 where: -b 002 is the entry I want to modify. --delete-bootnum Boot0002 is what I want to do to it. I don't remember if specifying "Boot0002" was necessary, but it worked all the same. I guess you can try first: efibootmgr -b 0001 -B as already suggested and see if this does it. Also, before I delete a boot stub entry, e.g. 0002, I change the boot order to make sure it is not first: --bootorder 0003,0005,0010,0002 but I don't think it is necessary. -- Regards, Mick
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