20.04: swapped /dev/sda, /dev/sdb, /dev/sdc

[mahesh]

/dev/sda is assigned to usb stick1, /dev/sdb is assigned to usb stick2, /dev/sdc is assigned to hard disk now although hdd has always been assigned to /dev/sda

Laptop, grub multiboot from rotary hdd, IceWM, legacy BIOS.

Could it be please caused by

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update-initramfs -uI've run yesterday because of

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kernel: Initramfs unpacking failed: Decoding failed
?
(No apparent problem yesterday.)