@Joe_Ge
Finally, something different: my Manjaro installation returns!
I ran fsck on the system partition on the internal hard drive, also on the remaining partitions. No conspicuous errors were detected. Rebooting, I had the usual result: the four error messages mentioned in previous messages, then a black screen completely unresponsive to keystrokes.
I then tried selecting the manjaro option from the system boot override menu:
Boot Override
UEFI OS (ESO512GYLCT-EP3-2L)
manjaro (ESO512GYLCT-EP3-2L)
UEFI: hp v165w 8192
UEFI: hp v165w 8192, Partition 2
ESO512GYLCT-EP3-2L
hp v165w 8192
Lauch EFI Shell from filesystem device
And my installed system actually appeared, to all appearances operating normally—something I hadn’t seen in quite a while. That’s progress, I guess, but I still have to interrupt the normal boot sequence to get the grub menu in order to subvert the currently inoperable default boot option.
I’m wondering if this problem is related to the one described in the article here: Boot entries differences. I can use the manjaro boot option workaround, but I don’t know how to restore the system to the correct boot options sequence so it simply boots up normally.
Here’s the efibootmgr output:
[manjaro /]# efibootmgr
BootCurrent: 0004
Timeout: 1 seconds
BootOrder: 0003,0000,0004,0005,0001,0002
Boot0000* manjaro HD(1,GPT,191f352d-eee8-dc42-984f-5f9ac41da946,0x1000,0x96000)/\EFI\MANJARO\GRUBX64.EFI
Boot0001* NVME BBS(HD,,0x0)/VenHw(5ce8128b-2cec-40f0-8372-80640e3dc858,1300)0000474f00004e4fc5000000010000008d00450053004f00350031003200470059004c00430054002d004500500033002d0032004c000000050109000200000000010416008b12e85cec2cf040837280640e3dc85813007fff040002010c00d041030a0000000001010600010101010600000003171000010000006479a7797a3040357fff040001043a00ef47642dc93ba041ac194d51d01b4ce635003100310032003300300034003200310031003600350030003000300037003100360000007fff04000000424f
Boot0002* USB BBS(USB,,0x0)/VenHw(5ce8128b-2cec-40f0-8372-80640e3dc858,0500)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
Boot0003* UEFI OS HD(1,GPT,191f352d-eee8-dc42-984f-5f9ac41da946,0x1000,0x96000)/\EFI\BOOT\BOOTX64.EFI0000424f
Boot0004* UEFI: hp v165w 8192 PciRoot(0x0)/Pci(0x8,0x1)/Pci(0x0,0x3)/USB(1,0)/CDROM(1,0x608a9c,0x8000)0000424f
Boot0005* UEFI: hp v165w 8192, Partition 2 PciRoot(0x0)/Pci(0x8,0x1)/Pci(0x0,0x3)/USB(1,0)/HD(2,MBR,0x0,0x608a9c,0x2000)0000424f
And here’s what my current boot options (including the USB for the live system) look like in the system BIOS:
FIXED BOOT ORDER Priorities
Boot Option #1 [UEFI NVME:UEFI OS (ESO512GYLCT-EP3-2L)]
Boot Option #2 [UEFI Hard Disk]
Boot Option #3 [UEFI CD/DVD]
Boot Option #4 [UEFI USB Device:UEFI: hp v165w 8192]
Boot Option #5 [UEFI Network]
Boot Option #6 [NVME:ESO512GYLCT-EP3-2L]
Boot Option #7 [Hard Disk]
Boot Option #8 [CD/DVD]
Boot Option #9 [USB Device:hp v165w 8192]
Boot Option #10 [Network]
Thanks for hanging in there through all this fumbling around on my part. Left to my own devices, I would have bailed a while ago. But having persisted with your help, I’m learning a lot about Linux and Manjaro—enough to get a better idea how much more I need to know, anyway—and now it’s looking like I even get my system back, preserving my applications and customization.
Any guidance as to where I should go from here?